Bump oj from 3.7.12 to 3.8.0 (#11387)

Bumps [oj](https://github.com/ohler55/oj) from 3.7.12 to 3.8.0.
- [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/v3.7.12...v3.8.0)

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

Gemfile

@@ -61,7 +61,7 @@ gem 'mime-types', '~> 3.2', require: 'mime/types/columnar'
 gem 'nilsimsa', git: 'https://github.com/witgo/nilsimsa', ref: 'fd184883048b922b176939f851338d0a4971a532'
 gem 'nokogiri', '~> 1.10'
 gem 'nsa', '~> 0.2'
-gem 'oj', '~> 3.7'
+gem 'oj', '~> 3.8'
 gem 'ostatus2', '~> 2.0'
 gem 'ox', '~> 2.11'
 gem 'posix-spawn', git: 'https://github.com/rtomayko/posix-spawn', ref: '58465d2e213991f8afb13b984854a49fcdcc980c'

Gemfile.lock

@@ -373,7 +373,7 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
       sidekiq (>= 3.5)
       statsd-ruby (~> 1.4, >= 1.4.0)
-    oj (3.7.12)
+    oj (3.8.0)
     omniauth (1.9.0)
       hashie (>= 3.4.6, < 3.7.0)
       rack (>= 1.6.2, < 3)
@@ -715,7 +715,7 @@ DEPENDENCIES
   nilsimsa!
   nokogiri (~> 1.10)
   nsa (~> 0.2)
-  oj (~> 3.7)
+  oj (~> 3.8)
   omniauth (~> 1.9)
   omniauth-cas (~> 1.1)
   omniauth-saml (~> 1.10)