build(deps): bump i18n from 1.15.0 to 1.15.1 (cloudfoundry#5203)

Bumps [i18n](https://github.com/ruby-i18n/i18n) from 1.15.0 to 1.15.1.
- [Release notes](https://github.com/ruby-i18n/i18n/releases)
- [Changelog](https://github.com/ruby-i18n/i18n/blob/master/CHANGELOG.md)
- [Commits](ruby-i18n/i18n@v1.15.0...v1.15.1)

---
updated-dependencies:
- dependency-name: i18n
  dependency-version: 1.15.1
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -198,7 +198,7 @@ GEM
       domain_name (~> 0.5)
     httpclient (2.9.0)
       mutex_m
-    i18n (1.15.0)
+    i18n (1.15.1)
       concurrent-ruby (~> 1.0)
     io-console (0.8.2)
     ipaddress (0.8.3)