Bump network dependency in bootstrap.sh to 2.3.1.1
Bump network dependency in bootstrap.sh to 2.3.1.1

network-2.3.1.0 does not build on Windows with GHC 7.6.1.

fugyk/cabal,sopvop/cabal,plumlife/cabal,Peaker/cabal,mydaum/cabal,enolan/cabal,gridaphobe/cabal,bennofs/cabal,thomie/cabal,headprogrammingczar/cabal,martinvlk/cabal,themoritz/cabal,randen/cabal,mmakowski/cabal,triplepointfive/cabal,x-y-z/cabal,lukexi/cabal,garetxe/cabal,sopvop/cabal,themoritz/cabal,Helkafen/cabal,gridaphobe/cabal,valderman/cabal,enolan/cabal,x-y-z/cabal,thomie/cabal,gbaz/cabal,trskop/cabal,anton-dessiatov/cabal,seereason/cabal,ghc-android/cabal,ghc-android/cabal,fpco/cabal,typelead/epm,kosmikus/cabal,seereason/cabal,ian-ross/cabal,lukexi/cabal,kolmodin/cabal,plow-technologies/cabal,sopvop/cabal,beni55/cabal,mightybyte/cabal,christiaanb/cabal,plow-technologies/cabal,eric-stanley/cabal,typelead/epm,Heather/cabal,edsko/cabal,eric-stanley/cabal,themoritz/cabal,beni55/cabal,Peaker/cabal,mmakowski/cabal,garetxe/cabal,gbaz/cabal,Helkafen/cabal,headprogrammingczar/cabal,ian-ross/cabal,rimmington/cabal,valderman/cabal,mydaum/cabal,thoughtpolice/cabal,anton-dessiatov/cabal,triplepointfive/cabal,corngood/cabal,trskop/cabal,christiaanb/cabal,bennofs/cabal,fugyk/cabal,kosmikus/cabal,mightybyte/cabal,edsko/cabal,thoughtpolice/cabal,fpco/cabal,kolmodin/cabal,martinvlk/cabal,randen/cabal,Heather/cabal,rimmington/cabal,corngood/cabal,plumlife/cabal