Bump reverse_markdown from 1.1.0 to 2.1.1

Bumps [reverse_markdown](https://github.com/xijo/reverse_markdown) from 1.1.0 to 2.1.1.
- [Release notes](https://github.com/xijo/reverse_markdown/releases)
- [Changelog](https://github.com/xijo/reverse_markdown/blob/master/CHANGELOG.md)
- [Commits](xijo/reverse_markdown@v1.1.0...v2.1.1)

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

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

Gemfile.lock

@@ -343,7 +343,7 @@ GEM
       nokogiri (~> 1)
       rake
     mini_mime (1.1.2)
-    mini_portile2 (2.6.1)
+    mini_portile2 (2.7.1)
     minitest (5.15.0)
     minitest-reporters (1.5.0)
       ansi
@@ -364,8 +364,8 @@ GEM
     netrc (0.11.0)
     nifty-generators (0.4.6)
     nio4r (2.5.8)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.13.1)
+      mini_portile2 (~> 2.7.0)
       racc (~> 1.4)
     nokogumbo (2.0.4)
       nokogiri (~> 1.8, >= 1.8.4)
@@ -513,7 +513,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     retriable (3.1.2)
-    reverse_markdown (1.1.0)
+    reverse_markdown (2.1.1)
       nokogiri
     rexml (3.2.5)
     rspec (3.10.0)