Bump rails-i18n from 4.0.2 to 6.0.0

Bumps [rails-i18n](https://github.com/svenfuchs/rails-i18n) from 4.0.2 to 6.0.0.
- [Release notes](https://github.com/svenfuchs/rails-i18n/releases)
- [Changelog](https://github.com/svenfuchs/rails-i18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/svenfuchs/rails-i18n/commits/v6.0.0)

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

Gemfile

@@ -54,7 +54,7 @@ gem "i18n-js", ">= 3.0.0"
 gem "oauth-plugin", ">= 0.5.1"
 gem "openstreetmap-deadlock_retry", ">= 1.3.0", :require => "deadlock_retry"
 gem "rack-cors"
-gem "rails-i18n", "~> 4.0.0"
+gem "rails-i18n", "~> 6.0.0"
 gem "rinku", ">= 2.0.6", :require => "rails_rinku"
 gem "strong_migrations"
 gem "validates_email_format_of", ">= 1.5.1"

Gemfile.lock

@@ -220,7 +220,7 @@ GEM
     html_tokenizer (0.0.7)
     htmlentities (4.3.4)
     http_accept_language (2.0.5)
-    i18n (0.9.5)
+    i18n (1.8.3)
       concurrent-ruby (~> 1.0)
     i18n-js (3.7.0)
       i18n (>= 0.6.6)
@@ -364,9 +364,9 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.3.0)
       loofah (~> 2.3)
-    rails-i18n (4.0.2)
-      i18n (~> 0.6)
-      rails (>= 4.0)
+    rails-i18n (6.0.0)
+      i18n (>= 0.7, < 2)
+      railties (>= 6.0.0, < 7)
     railties (6.0.3.2)
       actionpack (= 6.0.3.2)
       activesupport (= 6.0.3.2)
@@ -533,7 +533,7 @@ DEPENDENCIES
   rack-uri_sanitizer
   rails (= 6.0.3.2)
   rails-controller-testing
-  rails-i18n (~> 4.0.0)
+  rails-i18n (~> 6.0.0)
   rinku (>= 2.0.6)
   rotp
   rubocop