doc: update release process with SECURITY.md
doc: update release process with SECURITY.md

Xekyo/bitcoin,lateminer/bitcoin,mm-s/bitcoin,litecoin-project/litecoin,n1bor/bitcoin,litecoin-project/litecoin,pstratem/bitcoin,instagibbs/bitcoin,mitchellcash/bitcoin,bitcoin/bitcoin,FeatherCoin/Feathercoin,prusnak/bitcoin,jamesob/bitcoin,sstone/bitcoin,lateminer/bitcoin,jnewbery/bitcoin,prusnak/bitcoin,ahmedbodi/vertcoin,jtimon/bitcoin,GroestlCoin/bitcoin,particl/particl-core,jamesob/bitcoin,domob1812/namecore,dscotese/bitcoin,domob1812/namecore,CryptArc/bitcoin,jambolo/bitcoin,jlopp/statoshi,jamesob/bitcoin,domob1812/bitcoin,tjps/bitcoin,kallewoof/bitcoin,peercoin/peercoin,wellenreiter01/Feathercoin,cdecker/bitcoin,mm-s/bitcoin,instagibbs/bitcoin,mruddy/bitcoin,anditto/bitcoin,andreaskern/bitcoin,n1bor/bitcoin,wellenreiter01/Feathercoin,rnicoll/bitcoin,jlopp/statoshi,rnicoll/bitcoin,qtumproject/qtum,jtimon/bitcoin,bitcoinknots/bitcoin,GroestlCoin/GroestlCoin,jlopp/statoshi,jlopp/statoshi,GroestlCoin/GroestlCoin,Sjors/bitcoin,n1bor/bitcoin,tjps/bitcoin,practicalswift/bitcoin,qtumproject/qtum,ElementsProject/elements,JeremyRubin/bitcoin,peercoin/peercoin,ajtowns/bitcoin,yenliangl/bitcoin,JeremyRubin/bitcoin,fujicoin/fujicoin,kallewoof/bitcoin,anditto/bitcoin,rnicoll/bitcoin,fujicoin/fujicoin,MarcoFalke/bitcoin,tecnovert/particl-core,wellenreiter01/Feathercoin,particl/particl-core,jambolo/bitcoin,particl/particl-core,domob1812/bitcoin,particl/particl-core,qtumproject/qtum,apoelstra/bitcoin,monacoinproject/monacoin,jambolo/bitcoin,anditto/bitcoin,practicalswift/bitcoin,pataquets/namecoin-core,nikkitan/bitcoin,sipsorcery/bitcoin,qtumproject/qtum,FeatherCoin/Feathercoin,Xekyo/bitcoin,tecnovert/particl-core,tjps/bitcoin,monacoinproject/monacoin,DigitalPandacoin/pandacoin,alecalve/bitcoin,jlopp/statoshi,sipsorcery/bitcoin,FeatherCoin/Feathercoin,rnicoll/dogecoin,gjhiggins/vcoincore,MarcoFalke/bitcoin,fanquake/bitcoin,rnicoll/bitcoin,jtimon/bitcoin,andreaskern/bitcoin,alecalve/bitcoin,andreaskern/bitcoin,anditto/bitcoin,bitcoin/bitcoin,mm-s/bitcoin,JeremyRubin/bitcoin,FeatherCoin/Feathercoin,midnightmagic/bitcoin,namecoin/namecoin-core,MeshCollider/bitcoin,tjps/bitcoin,qtumproject/qtum,apoelstra/bitcoin,jtimon/bitcoin,midnightmagic/bitcoin,tecnovert/particl-core,EthanHeilman/bitcoin,instagibbs/bitcoin,monacoinproject/monacoin,cdecker/bitcoin,MeshCollider/bitcoin,pataquets/namecoin-core,ajtowns/bitcoin,bitcoinknots/bitcoin,monacoinproject/monacoin,tjps/bitcoin,lateminer/bitcoin,bitcoinknots/bitcoin,pataquets/namecoin-core,Xekyo/bitcoin,domob1812/namecore,n1bor/bitcoin,pstratem/bitcoin,bitcoin/bitcoin,midnightmagic/bitcoin,nikkitan/bitcoin,DigitalPandacoin/pandacoin,yenliangl/bitcoin,jnewbery/bitcoin,ajtowns/bitcoin,Xekyo/bitcoin,practicalswift/bitcoin,mruddy/bitcoin,bitcoinknots/bitcoin,fujicoin/fujicoin,AkioNak/bitcoin,andreaskern/bitcoin,Sjors/bitcoin,yenliangl/bitcoin,tecnovert/particl-core,namecoin/namecoin-core,prusnak/bitcoin,sstone/bitcoin,fujicoin/fujicoin,fanquake/bitcoin,DigitalPandacoin/pandacoin,yenliangl/bitcoin,AkioNak/bitcoin,wellenreiter01/Feathercoin,GroestlCoin/GroestlCoin,GroestlCoin/GroestlCoin,ahmedbodi/vertcoin,fujicoin/fujicoin,jamesob/bitcoin,ahmedbodi/vertcoin,CryptArc/bitcoin,namecoin/namecoin-core,rnicoll/dogecoin,namecoin/namecore,pataquets/namecoin-core,rnicoll/dogecoin,litecoin-project/litecoin,lateminer/bitcoin,GroestlCoin/bitcoin,particl/particl-core,kallewoof/bitcoin,CryptArc/bitcoin,instagibbs/bitcoin,prusnak/bitcoin,vertcoin/vertcoin,cdecker/bitcoin,jonasschnelli/bitcoin,rnicoll/bitcoin,AkioNak/bitcoin,mm-s/bitcoin,Xekyo/bitcoin,GroestlCoin/GroestlCoin,litecoin-project/litecoin,alecalve/bitcoin,cdecker/bitcoin,gjhiggins/vcoincore,jnewbery/bitcoin,jnewbery/bitcoin,DigitalPandacoin/pandacoin,ahmedbodi/vertcoin,sipsorcery/bitcoin,peercoin/peercoin,bitcoinsSG/bitcoin,achow101/bitcoin,dscotese/bitcoin,mitchellcash/bitcoin,apoelstra/bitcoin,bitcoinsSG/bitcoin,achow101/bitcoin,anditto/bitcoin,nikkitan/bitcoin,MeshCollider/bitcoin,bitcoinsSG/bitcoin,dscotese/bitcoin,EthanHeilman/bitcoin,Sjors/bitcoin,gjhiggins/vcoincore,ajtowns/bitcoin,AkioNak/bitcoin,AkioNak/bitcoin,pstratem/bitcoin,achow101/bitcoin,sstone/bitcoin,GroestlCoin/GroestlCoin,practicalswift/bitcoin,FeatherCoin/Feathercoin,GroestlCoin/bitcoin,vertcoin/vertcoin,jnewbery/bitcoin,tecnovert/particl-core,FeatherCoin/Feathercoin,gjhiggins/vcoincore,bitcoin/bitcoin,namecoin/namecoin-core,peercoin/peercoin,MarcoFalke/bitcoin,andreaskern/bitcoin,midnightmagic/bitcoin,vertcoin/vertcoin,ElementsProject/elements,ElementsProject/elements,lateminer/bitcoin,ajtowns/bitcoin,ahmedbodi/vertcoin,gjhiggins/vcoincore,mm-s/bitcoin,mruddy/bitcoin,domob1812/namecore,nikkitan/bitcoin,namecoin/namecore,ElementsProject/elements,namecoin/namecore,namecoin/namecoin-core,dscotese/bitcoin,MarcoFalke/bitcoin,pataquets/namecoin-core,mitchellcash/bitcoin,yenliangl/bitcoin,ajtowns/bitcoin,lateminer/bitcoin,peercoin/peercoin,mruddy/bitcoin,GroestlCoin/bitcoin,JeremyRubin/bitcoin,instagibbs/bitcoin,kallewoof/bitcoin,sstone/bitcoin,Xekyo/bitcoin,MeshCollider/bitcoin,domob1812/namecore,apoelstra/bitcoin,qtumproject/qtum,yenliangl/bitcoin,instagibbs/bitcoin,n1bor/bitcoin,vertcoin/vertcoin,n1bor/bitcoin,domob1812/bitcoin,litecoin-project/litecoin,domob1812/bitcoin,fanquake/bitcoin,jonasschnelli/bitcoin,namecoin/namecore,litecoin-project/litecoin,Sjors/bitcoin,mruddy/bitcoin,jambolo/bitcoin,mitchellcash/bitcoin,dscotese/bitcoin,mm-s/bitcoin,ahmedbodi/vertcoin,bitcoin/bitcoin,prusnak/bitcoin,MeshCollider/bitcoin,jonasschnelli/bitcoin,vertcoin/vertcoin,sstone/bitcoin,mitchellcash/bitcoin,achow101/bitcoin,namecoin/namecore,rnicoll/dogecoin,qtumproject/qtum,andreaskern/bitcoin,CryptArc/bitcoin,ElementsProject/elements,jonasschnelli/bitcoin,domob1812/bitcoin,gjhiggins/vcoincore,alecalve/bitcoin,DigitalPandacoin/pandacoin,monacoinproject/monacoin,sipsorcery/bitcoin,vertcoin/vertcoin,cdecker/bitcoin,rnicoll/bitcoin,sstone/bitcoin,EthanHeilman/bitcoin,achow101/bitcoin,jtimon/bitcoin,MeshCollider/bitcoin,mitchellcash/bitcoin,kallewoof/bitcoin,Sjors/bitcoin,wellenreiter01/Feathercoin,sipsorcery/bitcoin,DigitalPandacoin/pandacoin,jonasschnelli/bitcoin,kallewoof/bitcoin,cdecker/bitcoin,wellenreiter01/Feathercoin,MarcoFalke/bitcoin,EthanHeilman/bitcoin,jlopp/statoshi,practicalswift/bitcoin,jambolo/bitcoin,practicalswift/bitcoin,alecalve/bitcoin,CryptArc/bitcoin,bitcoinsSG/bitcoin,particl/particl-core,pstratem/bitcoin,domob1812/bitcoin,MarcoFalke/bitcoin,bitcoinsSG/bitcoin,pstratem/bitcoin,apoelstra/bitcoin,apoelstra/bitcoin,fanquake/bitcoin,tjps/bitcoin,JeremyRubin/bitcoin,CryptArc/bitcoin,mruddy/bitcoin,midnightmagic/bitcoin,monacoinproject/monacoin,pataquets/namecoin-core,AkioNak/bitcoin,midnightmagic/bitcoin,fanquake/bitcoin,anditto/bitcoin,GroestlCoin/bitcoin,rnicoll/dogecoin,EthanHeilman/bitcoin,JeremyRubin/bitcoin,bitcoinsSG/bitcoin,tecnovert/particl-core,namecoin/namecoin-core,jambolo/bitcoin,jamesob/bitcoin,domob1812/namecore,nikkitan/bitcoin,sipsorcery/bitcoin,jtimon/bitcoin,prusnak/bitcoin,peercoin/peercoin,alecalve/bitcoin,nikkitan/bitcoin,dscotese/bitcoin,fujicoin/fujicoin,GroestlCoin/bitcoin,fanquake/bitcoin,pstratem/bitcoin,achow101/bitcoin,ElementsProject/elements,namecoin/namecore,bitcoinknots/bitcoin,bitcoin/bitcoin,jamesob/bitcoin,EthanHeilman/bitcoin