Update minimum Rack version to 2.0.9
Update minimum Rack version to 2.0.9

Since 28f81c05589e4be98b6500b2b915842c68846c41, if the `same_site:`
option is set to `:none` when creating a cookie, it will be passed
through to Rack. Support for `:none` was added in Rack 2.0.9, so we
should bump the minimum required version to ensure it's available.

tgxworld/rails,BlakeWilliams/rails,rafaelfranca/omg-rails,kmcphillips/rails,yahonda/rails,MSP-Greg/rails,rafaelfranca/omg-rails,palkan/rails,eileencodes/rails,yawboakye/rails,yahonda/rails,joonyou/rails,eileencodes/rails,joonyou/rails,repinel/rails,schuetzm/rails,betesh/rails,yahonda/rails,EmmaB/rails-1,lcreid/rails,BlakeWilliams/rails,rails/rails,tgxworld/rails,tjschuck/rails,kmcphillips/rails,tgxworld/rails,Edouard-chin/rails,eileencodes/rails,EmmaB/rails-1,Stellenticket/rails,tgxworld/rails,palkan/rails,yalab/rails,palkan/rails,tjschuck/rails,tjschuck/rails,MSP-Greg/rails,Stellenticket/rails,Erol/rails,kddeisz/rails,Envek/rails,vipulnsward/rails,eileencodes/rails,vipulnsward/rails,lcreid/rails,esparta/rails,MSP-Greg/rails,georgeclaghorn/rails,esparta/rails,yalab/rails,schuetzm/rails,Edouard-chin/rails,rails/rails,lcreid/rails,yhirano55/rails,bogdanvlviv/rails,Erol/rails,georgeclaghorn/rails,rails/rails,Edouard-chin/rails,kddeisz/rails,joonyou/rails,yalab/rails,kmcphillips/rails,yawboakye/rails,lcreid/rails,schuetzm/rails,repinel/rails,Erol/rails,yahonda/rails,bogdanvlviv/rails,betesh/rails,iainbeeston/rails,kmcphillips/rails,repinel/rails,BlakeWilliams/rails,BlakeWilliams/rails,esparta/rails,iainbeeston/rails,yawboakye/rails,kddeisz/rails,Vasfed/rails,starknx/rails,Stellenticket/rails,bogdanvlviv/rails,Envek/rails,MSP-Greg/rails,yalab/rails,rafaelfranca/omg-rails,Vasfed/rails,Envek/rails,starknx/rails,repinel/rails,tjschuck/rails,EmmaB/rails-1,joonyou/rails,betesh/rails,Erol/rails,Vasfed/rails,vipulnsward/rails,vipulnsward/rails,georgeclaghorn/rails,iainbeeston/rails,Stellenticket/rails,betesh/rails,yhirano55/rails,georgeclaghorn/rails,yhirano55/rails,starknx/rails,iainbeeston/rails,schuetzm/rails,Envek/rails,esparta/rails,rails/rails,yhirano55/rails,palkan/rails,bogdanvlviv/rails,Edouard-chin/rails,kddeisz/rails,yawboakye/rails,Vasfed/rails