Update firefox-esr.rb from 78.4.0 to 78.4.1 (#9917)
Update firefox-esr.rb from 78.4.0 to 78.4.1 (#9917)




pkq/homebrew-versions,404NetworkError/homebrew-versions,404NetworkError/homebrew-versions,caskroom/homebrew-versions,mahori/homebrew-cask-versions,pkq/homebrew-versions,caskroom/homebrew-versions