Bump vim/bundle/fzf.vim from 678ee1a to f3b8209

Bumps [vim/bundle/fzf.vim](https://github.com/junegunn/fzf.vim) from `678ee1a` to `f3b8209`.
- [Commits](junegunn/fzf.vim@678ee1a...f3b8209)

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

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