Bump linuxbrew/Homebrew from `e6e76a4` to `5521c76`
Bump linuxbrew/Homebrew from `e6e76a4` to `5521c76`

Bumps [linuxbrew/Homebrew](https://github.com/Homebrew/brew) from `e6e76a4` to `5521c76`.
- [Release notes](https://github.com/Homebrew/brew/releases)
- [Commits](https://github.com/Homebrew/brew/compare/e6e76a403a63d74bfbf9dde4054e8f50f6c9c322...5521c76e663977f742d09fa03ca0f76fa250b15e)

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