Bump ox from 2.11.0 to 2.12.1 (#12853)

Bumps [ox](https://github.com/ohler55/ox) from 2.11.0 to 2.12.1.
- [Release notes](https://github.com/ohler55/ox/releases)
- [Changelog](https://github.com/ohler55/ox/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ohler55/ox/compare/v2.11.0...v2.12.1)

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

Gemfile

@@ -68,7 +68,7 @@ gem 'nilsimsa', git: 'https://github.com/witgo/nilsimsa', ref: 'fd184883048b922b
 gem 'nokogiri', '~> 1.10'
 gem 'nsa', '~> 0.2'
 gem 'oj', '~> 3.10'
-gem 'ox', '~> 2.11'
+gem 'ox', '~> 2.12'
 gem 'parslet'
 gem 'parallel', '~> 1.19'
 gem 'posix-spawn', git: 'https://github.com/rtomayko/posix-spawn', ref: '58465d2e213991f8afb13b984854a49fcdcc980c'