Bump rollbar from 3.4.2 to 3.5.1

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 3.4.2 to 3.5.1.
- [Release notes](https://github.com/rollbar/rollbar-gem/releases)
- [Changelog](https://github.com/rollbar/rollbar-gem/blob/master/CHANGELOG.md)
- [Commits](rollbar/rollbar-gem@v3.4.2...v3.5.1)

---
updated-dependencies:
- dependency-name: rollbar
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -287,7 +287,7 @@ GEM
     reline (0.4.1)
       io-console (~> 0.5)
     rexml (3.2.6)
-    rollbar (3.4.2)
+    rollbar (3.5.1)
     rss (0.3.0)
       rexml
     rubocop (1.59.0)