Bump maxitest from 5.4.0 to 5.5.0

Bumps [maxitest](https://github.com/grosser/maxitest) from 5.4.0 to 5.5.0.
- [Changelog](https://github.com/grosser/maxitest/blob/master/CHANGELOG.md)
- [Commits](grosser/maxitest@v5.4.0...v5.5.0)

---
updated-dependencies:
- dependency-name: maxitest
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -396,8 +396,8 @@ GEM
       rack (>= 2.1.4.1)
     marcel (1.0.4)
     matrix (0.4.2)
-    maxitest (5.4.0)
-      minitest (>= 5.14.0, < 5.21.0)
+    maxitest (5.5.0)
+      minitest (>= 5.14.0, < 5.24.0)
     mechanize (2.10.0)
       addressable (~> 2.8)
       base64