dev-cmd/bump-formula-pr: Escape `.`s in hostnames in regexps
dev-cmd/bump-formula-pr: Escape `.`s in hostnames in regexps

> This regular expression has an unescaped '.' before 'apache.org/dyn/closer', so it might match more hosts than expected.

nandub/brew,Homebrew/brew,JCount/brew,MikeMcQuaid/brew,nandub/brew,Homebrew/brew,MikeMcQuaid/brew,JCount/brew,Homebrew/brew,MikeMcQuaid/brew,Homebrew/brew,nandub/brew,JCount/brew,JCount/brew,nandub/brew,MikeMcQuaid/brew