bump-formula-pr: add Debian mirror handling.
bump-formula-pr: add Debian mirror handling.

hanxue/linuxbrew,Homebrew/brew,Homebrew/brew,Linuxbrew/brew,vitorgalvao/brew,mgrimes/brew,mahori/brew,mgrimes/brew,JCount/brew,konqui/brew,DomT4/brew,konqui/brew,claui/brew,alyssais/brew,nandub/brew,hanxue/linuxbrew,reitermarkus/brew,sjackman/homebrew,reitermarkus/brew,mgrimes/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,Linuxbrew/brew,vitorgalvao/brew,sjackman/homebrew,DomT4/brew,maxim-belkin/brew,maxim-belkin/brew,alyssais/brew,ilovezfs/brew,Linuxbrew/brew,MikeMcQuaid/brew,EricFromCanada/brew,reelsense/brew,vitorgalvao/brew,EricFromCanada/brew,reitermarkus/brew,claui/brew,JCount/brew,JCount/brew,EricFromCanada/brew,DomT4/brew,nandub/brew,reitermarkus/brew,claui/brew,mahori/brew,EricFromCanada/brew,konqui/brew,ilovezfs/brew,Linuxbrew/brew,reelsense/brew,maxim-belkin/brew,nandub/brew,claui/brew,ilovezfs/brew,mahori/brew,Homebrew/brew,JCount/brew,vitorgalvao/brew,sjackman/homebrew,nandub/brew,Homebrew/brew,mahori/brew,alyssais/brew,hanxue/linuxbrew,konqui/brew,DomT4/brew,MikeMcQuaid/brew,sjackman/homebrew,reelsense/brew