Bump oj from 3.11.8 to 3.12.1 (#16493)

Bumps [oj](https://github.com/ohler55/oj) from 3.11.8 to 3.12.1.
- [Release notes](https://github.com/ohler55/oj/releases)
- [Changelog](https://github.com/ohler55/oj/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/ohler55/oj/compare/v3.11.8...v3.12.1)

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

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

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

Gemfile.lock

@@ -374,7 +374,7 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
       sidekiq (>= 3.5)
       statsd-ruby (~> 1.4, >= 1.4.0)
-    oj (3.11.8)
+    oj (3.12.1)
     omniauth (1.9.1)
       hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
@@ -733,7 +733,7 @@ DEPENDENCIES
   net-ldap (~> 0.17)
   nokogiri (~> 1.11)
   nsa (~> 0.2)
-  oj (~> 3.11)
+  oj (~> 3.12)
   omniauth (~> 1.9)
   omniauth-cas (~> 2.0)
   omniauth-rails_csrf_protection (~> 0.1)