Bump reverse_markdown from 2.1.1 to 3.0.0

Bumps [reverse_markdown](https://github.com/xijo/reverse_markdown) from 2.1.1 to 3.0.0.
- [Changelog](https://github.com/xijo/reverse_markdown/blob/master/CHANGELOG.md)
- [Commits](xijo/reverse_markdown@v2.1.1...v3.0.0)

---
updated-dependencies:
- dependency-name: reverse_markdown
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -374,7 +374,7 @@ GEM
       io-console (~> 0.5)
     request_store (1.7.0)
       rack (>= 1.4)
-    reverse_markdown (2.1.1)
+    reverse_markdown (3.0.0)
       nokogiri
     rexml (3.3.9)
     rspec (3.13.0)