Remove skip-gems from 4-2 release notes
Remove skip-gems from 4-2 release notes

- This option was removed in https://github.com/rails/rails/commit/bf17c8a531bc80.
- [ci skip]

bradleypriest/rails,Envek/rails,deraru/rails,alecspopa/rails,xlymian/rails,Erol/rails,Stellenticket/rails,prathamesh-sonpatki/rails,iainbeeston/rails,sealocal/rails,coreyward/rails,gavingmiller/rails,BlakeWilliams/rails,iainbeeston/rails,georgeclaghorn/rails,prathamesh-sonpatki/rails,riseshia/railsguides.kr,rafaelfranca/omg-rails,bradleypriest/rails,ttanimichi/rails,aditya-kapoor/rails,lcreid/rails,lcreid/rails,gcourtemanche/rails,matrinox/rails,riseshia/railsguides.kr,iainbeeston/rails,gcourtemanche/rails,aditya-kapoor/rails,hanystudy/rails,ledestin/rails,tgxworld/rails,mathieujobin/reduced-rails-for-travis,yasslab/railsguides.jp,EmmaB/rails-1,elfassy/rails,amoody2108/TechForJustice,kaspth/rails,illacceptanything/illacceptanything,palkan/rails,MichaelSp/rails,BlakeWilliams/rails,samphilipd/rails,schuetzm/rails,starknx/rails,kachick/rails,mtsmfm/railstest,rbhitchcock/rails,sealocal/rails,gavingmiller/rails,brchristian/rails,joonyou/rails,schuetzm/rails,mtsmfm/rails,yahonda/rails,arjes/rails,baerjam/rails,mechanicles/rails,flanger001/rails,yawboakye/rails,stefanmb/rails,kddeisz/rails,samphilipd/rails,bolek/rails,arjes/rails,vipulnsward/rails,starknx/rails,BlakeWilliams/rails,sealocal/rails,MSP-Greg/rails,kenta-s/rails,repinel/rails,marklocklear/rails,rbhitchcock/rails,printercu/rails,yasslab/railsguides.jp,Erol/rails,kmayer/rails,assain/rails,koic/rails,stefanmb/rails,assain/rails,tijwelch/rails,Stellenticket/rails,jeremy/rails,tjschuck/rails,ngpestelos/rails,illacceptanything/illacceptanything,Sen-Zhang/rails,elfassy/rails,kirs/rails-1,shioyama/rails,utilum/rails,yawboakye/rails,deraru/rails,coreyward/rails,maicher/rails,illacceptanything/illacceptanything,voray/rails,baerjam/rails,mtsmfm/railstest,ttanimichi/rails,tjschuck/rails,kmcphillips/rails,fabianoleittes/rails,elfassy/rails,vassilevsky/rails,shioyama/rails,kmayer/rails,assain/rails,arunagw/rails,brchristian/rails,joonyou/rails,vassilevsky/rails,yalab/rails,ngpestelos/rails,Vasfed/rails,Spin42/rails,tijwelch/rails,lcreid/rails,deraru/rails,MichaelSp/rails,felipecvo/rails,ngpestelos/rails,sergey-alekseev/rails,notapatch/rails,88rabbit/newRails,gfvcastro/rails,yalab/rails,kaspth/rails,gauravtiwari/rails,esparta/rails,illacceptanything/illacceptanything,Edouard-chin/rails,assain/rails,fabianoleittes/rails,brchristian/rails,utilum/rails,stefanmb/rails,prathamesh-sonpatki/rails,kmcphillips/rails,shioyama/rails,mathieujobin/reduced-rails-for-travis,EmmaB/rails-1,illacceptanything/illacceptanything,untidy-hair/rails,maicher/rails,kamipo/rails,mohitnatoo/rails,georgeclaghorn/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,illacceptanything/illacceptanything,tjschuck/rails,baerjam/rails,illacceptanything/illacceptanything,kachick/rails,esparta/rails,palkan/rails,xlymian/rails,illacceptanything/illacceptanything,ttanimichi/rails,eileencodes/rails,pschambacher/rails,repinel/rails,printercu/rails,mathieujobin/reduced-rails-for-travis,rails/rails,gauravtiwari/rails,Stellenticket/rails,travisofthenorth/rails,kenta-s/rails,voray/rails,mtsmfm/rails,eileencodes/rails,jeremy/rails,gcourtemanche/rails,starknx/rails,yawboakye/rails,utilum/rails,bolek/rails,odedniv/rails,Edouard-chin/rails,rossta/rails,kddeisz/rails,kddeisz/rails,yhirano55/rails,yhirano55/rails,illacceptanything/illacceptanything,vipulnsward/rails,gavingmiller/rails,esparta/rails,mijoharas/rails,Vasfed/rails,Erol/rails,alecspopa/rails,kddeisz/rails,notapatch/rails,BlakeWilliams/rails,marklocklear/rails,yasslab/railsguides.jp,rossta/rails,bolek/rails,richseviora/rails,mechanicles/rails,joonyou/rails,shioyama/rails,mohitnatoo/rails,MichaelSp/rails,rails/rails,samphilipd/rails,yahonda/rails,kachick/rails,odedniv/rails,esparta/rails,pschambacher/rails,felipecvo/rails,Vasfed/rails,repinel/rails,arunagw/rails,pvalena/rails,flanger001/rails,mohitnatoo/rails,printercu/rails,mohitnatoo/rails,georgeclaghorn/rails,Edouard-chin/rails,palkan/rails,illacceptanything/illacceptanything,mechanicles/rails,Spin42/rails,notapatch/rails,notapatch/rails,betesh/rails,tijwelch/rails,travisofthenorth/rails,kirs/rails-1,koic/rails,repinel/rails,flanger001/rails,pvalena/rails,vipulnsward/rails,EmmaB/rails-1,kaspth/rails,yhirano55/rails,mtsmfm/rails,riseshia/railsguides.kr,88rabbit/newRails,matrinox/rails,amoody2108/TechForJustice,yahonda/rails,fabianoleittes/rails,Envek/rails,sergey-alekseev/rails,rossta/rails,fabianoleittes/rails,mijoharas/rails,tjschuck/rails,voray/rails,betesh/rails,travisofthenorth/rails,marklocklear/rails,lucasmazza/rails,Sen-Zhang/rails,arunagw/rails,yalab/rails,bradleypriest/rails,untidy-hair/rails,pvalena/rails,yasslab/railsguides.jp,arjes/rails,rails/rails,betesh/rails,Vasfed/rails,aditya-kapoor/rails,eileencodes/rails,vassilevsky/rails,Erol/rails,kmcphillips/rails,yawboakye/rails,schuetzm/rails,illacceptanything/illacceptanything,Sen-Zhang/rails,tgxworld/rails,gfvcastro/rails,kamipo/rails,kirs/rails-1,untidy-hair/rails,mechanicles/rails,88rabbit/newRails,illacceptanything/il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