Update requirements/prod.txt
Update requirements/prod.txt

Upgrade gunicorn.
tsl143/zamboni,clouserw/zamboni,mrrrgn/olympia,washort/zamboni,washort/zamboni,ddurst/zamboni,ngokevin/zamboni,jpetto/olympia,mozilla/addons-server,ayushagrawal288/zamboni,ingenioustechie/zamboni,shahbaz17/zamboni,mstriemer/zamboni,yfdyh000/olympia,jamesthechamp/zamboni,clouserw/zamboni,Revanth47/addons-server,bqbn/addons-server,Jobava/zamboni,koehlermichael/olympia,mozilla/zamboni,muffinresearch/addons-server,kmaglione/olympia,Jobava/zamboni,lavish205/olympia,ayushagrawal288/zamboni,psiinon/addons-server,luckylavish/zamboni,mrrrgn/olympia,spasovski/zamboni,crdoconnor/olympia,magopian/olympia,clouserw/zamboni,shahbaz17/zamboni,Revanth47/addons-server,shahbaz17/zamboni,koehlermichael/olympia,yfdyh000/olympia,mstriemer/olympia,kumar303/addons-server,aviarypl/mozilla-l10n-addons-server,Joergen/zamboni,Witia1/olympia,crdoconnor/olympia,bqbn/addons-server,anaran/olympia,muffinresearch/addons-server,kumar303/addons-server,robhudson/zamboni,muffinresearch/olympia,elysium001/zamboni,jpetto/olympia,atiqueahmedziad/addons-server,andymckay/olympia,ddurst/zamboni,beni55/olympia,andymckay/addons-server,harry-7/addons-server,harry-7/addons-server,mstriemer/olympia,wagnerand/addons-server,eviljeff/zamboni,beni55/olympia,mozilla/olympia,wagnerand/addons-server,jasonthomas/zamboni,jasonthomas/zamboni,andymckay/zamboni,tsl143/zamboni,mstriemer/zamboni,Hitechverma/zamboni,jasonthomas/zamboni,yfdyh000/olympia,Prashant-Surya/addons-server,crdoconnor/olympia,koehlermichael/olympia,kumar303/olympia,mozilla/zamboni,SuriyaaKudoIsc/olympia,mdaif/olympia,jpetto/olympia,bqbn/addons-server,crdoconnor/olympia,johancz/olympia,Prashant-Surya/addons-server,aviarypl/mozilla-l10n-addons-server,SuriyaaKudoIsc/olympia,mozilla/zamboni,wagnerand/zamboni,diox/zamboni,washort/zamboni,Witia1/olympia,jpetto/olympia,Joergen/olympia,mozilla/addons-server,eviljeff/olympia,beni55/olympia,Nolski/olympia,Joergen/olympia,robhudson/zamboni,diox/olympia,muffinresearch/olympia,wagnerand/zamboni,harry-7/addons-server,mrrrgn/olympia,spasovski/zamboni,ayushagrawal288/zamboni,lavish205/olympia,magopian/olympia,kmaglione/olympia,muffinresearch/olympia,Hitechverma/zamboni,harikishen/addons-server,eviljeff/zamboni,mozilla/olympia,jamesthechamp/zamboni,elysium001/zamboni,jamesthechamp/zamboni,SuriyaaKudoIsc/olympia,Joergen/olympia,wagnerand/olympia,mstriemer/olympia,luckylavish/zamboni,eviljeff/zamboni,Joergen/olympia,muffinresearch/addons-server,Witia1/olympia,anaran/olympia,harikishen/addons-server,kmaglione/olympia,Revanth47/addons-server,johancz/olympia,Witia1/olympia,mdaif/olympia,lavish205/olympia,eviljeff/olympia,mstriemer/olympia,mdaif/olympia,tsl143/addons-server,diox/olympia,Nolski/olympia,lavish205/olympia,yfdyh000/olympia,mstriemer/addons-server,wagnerand/zamboni,kumar303/zamboni,elysium001/zamboni,mstriemer/addons-server,Prashant-Surya/addons-server,tsl143/addons-server,wagnerand/olympia,johancz/olympia,mstriemer/addons-server,washort/zamboni,andymckay/olympia,muffinresearch/olympia,bqbn/addons-server,robhudson/zamboni,mstriemer/zamboni,robhudson/zamboni,magopian/olympia,kumar303/zamboni,Nolski/olympia,Jobava/zamboni,Joergen/zamboni,tsl143/addons-server,eviljeff/zamboni,mudithkr/zamboni,ingenioustechie/zamboni,mudithkr/zamboni,aviarypl/mozilla-l10n-addons-server,harikishen/addons-server,atiqueahmedziad/addons-server,Hitechverma/zamboni,kumar303/addons-server,kumar303/addons-server,kumar303/olympia,harry-7/addons-server,tsl143/zamboni,mozilla/addons-server,diox/olympia,mstriemer/addons-server,kmaglione/olympia,koehlermichael/olympia,mudithkr/zamboni,diox/zamboni,kumar303/olympia,kumar303/olympia,Joergen/zamboni,diox/zamboni,Joergen/zamboni,magopian/olympia,andymckay/zamboni,Joergen/zamboni,tsl143/addons-server,andymckay/olympia,Witia1/olympia,ddurst/zamboni,beni55/olympia,mdaif/olympia,mozilla/addons-server,luckylavish/zamboni,mudithkr/zamboni,kumar303/zamboni,clouserw/zamboni,luckylavish/zamboni,jamesthechamp/zamboni,diox/olympia,andymckay/addons-server,andymckay/olympia,spasovski/zamboni,koehlermichael/olympia,jasonthomas/zamboni,kmaglione/olympia,mozilla/zamboni,Joergen/olympia,atiqueahmedziad/addons-server,mstriemer/zamboni,SuriyaaKudoIsc/olympia,mdaif/olympia,mozilla/olympia,elysium001/zamboni,atiqueahmedziad/addons-server,muffinresearch/addons-server,johancz/olympia,Nolski/olympia,Revanth47/addons-server,crdoconnor/olympia,andymckay/zamboni,eviljeff/olympia,shahbaz17/zamboni,wagnerand/zamboni,harikishen/addons-server,johancz/olympia,tsl143/zamboni,yfdyh000/olympia,Nolski/olympia,diox/zamboni,ingenioustechie/zamboni,psiinon/addons-server,mrrrgn/olympia,mrrrgn/olympia,anaran/olympia,andymckay/addons-server,andymckay/addons-server,wagnerand/olympia,ddurst/zamboni,wagnerand/addons-server,Joergen/zamboni,Hitechverma/zamboni,anaran/olympia,wagnerand/addons-server,Jobava/zamboni,kumar303/zamboni,eviljeff/olympia,muffinresearch/addons-server,ngokevin/zamboni,muffinresearch/olympia,beni55/olympia,ngokevin/zamboni,ayushagrawal288/zamboni,aviarypl/mozilla-l10n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