Bump i18n-js from 3.9.0 to 3.9.1

Bumps [i18n-js](https://github.com/fnando/i18n-js) from 3.9.0 to 3.9.1.
- [Release notes](https://github.com/fnando/i18n-js/releases)
- [Changelog](https://github.com/fnando/i18n-js/blob/v3.9.1/CHANGELOG.md)
- [Commits](https://github.com/fnando/i18n-js/compare/v3.9.0...v3.9.1)

---
updated-dependencies:
- dependency-name: i18n-js
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -544,7 +544,7 @@ GEM
     httpclient (2.8.3)
     i18n (1.9.1)
       concurrent-ruby (~> 1.0)
-    i18n-js (3.9.0)
+    i18n-js (3.9.1)
       i18n (>= 0.6.6)
     icalendar (2.7.1)
       ice_cube (~> 0.16)