Bump rollbar from 3.5.1 to 3.5.2

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 3.5.1 to 3.5.2.
- [Release notes](https://github.com/rollbar/rollbar-gem/releases)
- [Changelog](https://github.com/rollbar/rollbar-gem/blob/master/CHANGELOG.md)
- [Commits](rollbar/rollbar-gem@v3.5.1...v3.5.2)

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

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

Gemfile.lock

@@ -190,7 +190,7 @@ GEM
       ffi (~> 1.0)
     regexp_parser (2.9.0)
     rexml (3.2.5)
-    rollbar (3.5.1)
+    rollbar (3.5.2)
     rspec-core (3.12.2)
       rspec-support (~> 3.12.0)
     rspec-expectations (3.12.3)