Bump vim/bundle/vim-airline from `f84683a` to `ef4666b`
Bump vim/bundle/vim-airline from `f84683a` to `ef4666b`

Bumps [vim/bundle/vim-airline](https://github.com/vim-airline/vim-airline) from `f84683a` to `ef4666b`.
- [Release notes](https://github.com/vim-airline/vim-airline/releases)
- [Commits](https://github.com/vim-airline/vim-airline/compare/f84683a8c2045474741dbfe339cd7b31a955c1a0...ef4666bd86ea1d6ac06a709cde0cde3df537c9e3)

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