Update Gemfile.lock minimum Rack version to 2.0.9
Update Gemfile.lock minimum Rack version to 2.0.9

Follow-up to #38991.

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