build(deps): bump vim/bundle/ale from 9546821 to a7ef181

Bumps [vim/bundle/ale](https://github.com/w0rp/ale) from `9546821` to `a7ef181`.
- [Release notes](https://github.com/w0rp/ale/releases)
- [Commits](dense-analysis/ale@9546821...a7ef181)

---
updated-dependencies:
- dependency-name: vim/bundle/ale
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>