Bump i18n from 1.8.9 to 1.8.10

Bumps [i18n](https://github.com/ruby-i18n/i18n) from 1.8.9 to 1.8.10.
- [Release notes](https://github.com/ruby-i18n/i18n/releases)
- [Changelog](https://github.com/ruby-i18n/i18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ruby-i18n/i18n/compare/v1.8.9...v1.8.10)

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

Gemfile.lock

@@ -269,7 +269,7 @@ GEM
       tilt
     hashdiff (1.0.1)
     highline (2.0.3)
-    i18n (1.8.9)
+    i18n (1.8.10)
       concurrent-ruby (~> 1.0)
     i18n-js (3.8.2)
       i18n (>= 0.6.6)