Bump linuxbrew/Homebrew from `a81a76b` to `4f4fb49`
Bump linuxbrew/Homebrew from `a81a76b` to `4f4fb49`

Bumps [linuxbrew/Homebrew](https://github.com/Homebrew/brew) from `a81a76b` to `4f4fb49`.
- [Release notes](https://github.com/Homebrew/brew/releases)
- [Commits](https://github.com/Homebrew/brew/compare/a81a76b196e987210a0f1f2dcfe8453483a23549...4f4fb49481685208c5756c897944ae28757ca5c7)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
doot/dotfiles,doot/dotfiles