ui: bump i18n in /server/src/main/webapp/WEB-INF/rails

Bumps [i18n](https://github.com/ruby-i18n/i18n) from 1.11.0 to 1.12.0.
- [Release notes](https://github.com/ruby-i18n/i18n/releases)
- [Changelog](https://github.com/ruby-i18n/i18n/blob/master/CHANGELOG.md)
- [Commits](ruby-i18n/i18n@v1.11.0...v1.12.0)

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

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

Author: dependabot[bot]

server/src/main/webapp/WEB-INF/rails/Gemfile.lock

@@ -68,7 +68,7 @@ GEM
     ffi (1.15.5-java)
     globalid (1.0.0)
       activesupport (>= 5.0)
-    i18n (1.11.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     js-routes (1.4.14)
       railties (>= 4)