Bump git from 1.9.1 to 1.11.0 (#55)

Bumps [git](https://github.com/ruby-git/ruby-git) from 1.9.1 to 1.11.0.
- [Release notes](https://github.com/ruby-git/ruby-git/releases)
- [Changelog](https://github.com/ruby-git/ruby-git/blob/master/CHANGELOG.md)
- [Commits](ruby-git/ruby-git@v1.9.1...v1.11.0)

---
updated-dependencies:
- dependency-name: git
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -54,7 +54,7 @@ GEM
     faraday-net_http_persistent (1.2.0)
     faraday-patron (1.0.0)
     faraday-rack (1.0.0)
-    git (1.9.1)
+    git (1.11.0)
       rchardet (~> 1.8)
     kramdown (2.3.1)
       rexml