build(deps): bump oj from 3.16.12 to 3.16.13 (cloudfoundry#4695)

Bumps [oj](https://github.com/ohler55/oj) from 3.16.12 to 3.16.13.
- [Release notes](https://github.com/ohler55/oj/releases)
- [Changelog](https://github.com/ohler55/oj/blob/develop/CHANGELOG.md)
- [Commits](ohler55/oj@v3.16.12...v3.16.13)

---
updated-dependencies:
- dependency-name: oj
  dependency-version: 3.16.13
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -334,7 +334,7 @@ GEM
     nokogiri (1.18.10-x86_64-linux-gnu)
       racc (~> 1.4)
     observer (0.1.2)
-    oj (3.16.12)
+    oj (3.16.13)
       bigdecimal (>= 3.0)
       ostruct (>= 0.2)
     openssl (3.3.2)