Bump oj from 3.5.0 to 3.5.1

Bumps [oj](https://github.com/ohler55/oj) from 3.5.0 to 3.5.1.
- [Release notes](https://github.com/ohler55/oj/releases)
- [Changelog](https://github.com/ohler55/oj/blob/master/CHANGELOG.md)
- [Commits](ohler55/oj@v3.5.0...v3.5.1)

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

Gemfile.lock

@@ -166,7 +166,7 @@ GEM
       shellany (~> 0.0)
     octokit (4.7.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    oj (3.5.0)
+    oj (3.5.1)
     orm_adapter (0.5.0)
     parallel (1.12.1)
     parser (2.4.0.2)