build(deps): bump vim/bundle/tagbar from 0815b54 to bc087d8

Bumps [vim/bundle/tagbar](https://github.com/majutsushi/tagbar) from `0815b54` to `bc087d8`.
- [Commits](preservim/tagbar@0815b54...bc087d8)

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

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