Update signal-beta from 1.37.3-beta.1 to 1.38.1-beta.1 (#9900)
Update signal-beta from 1.37.3-beta.1 to 1.38.1-beta.1 (#9900)




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