Bump idn-ruby from 0.1.4 to 0.1.5 (#21348)

Bumps [idn-ruby](https://github.com/deepfryed/idn-ruby) from 0.1.4 to 0.1.5.
- [Release notes](https://github.com/deepfryed/idn-ruby/releases)
- [Changelog](https://github.com/deepfryed/idn-ruby/blob/master/CHANGES)
- [Commits](https://github.com/deepfryed/idn-ruby/compare/v0.1.4...v0.1.5)

---
updated-dependencies:
- dependency-name: idn-ruby
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -325,7 +325,7 @@ GEM
       rails-i18n
       rainbow (>= 2.2.2, < 4.0)
       terminal-table (>= 1.5.1)
-    idn-ruby (0.1.4)
+    idn-ruby (0.1.5)
     ipaddress (0.8.3)
     jmespath (1.6.1)
     json (2.6.2)