Bump public_suffix from 4.0.5 to 4.0.6 (#14743)

Bumps [public_suffix](https://github.com/weppos/publicsuffix-ruby) from 4.0.5 to 4.0.6.
- [Release notes](https://github.com/weppos/publicsuffix-ruby/releases)
- [Changelog](https://github.com/weppos/publicsuffix-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/weppos/publicsuffix-ruby/compare/v4.0.5...v4.0.6

)

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

Gemfile.lock

@@ -426,7 +426,7 @@ GEM
       pry (~> 0.13.0)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (4.0.5)
+    public_suffix (4.0.6)
     puma (4.3.5)
       nio4r (~> 2.0)
     pundit (2.1.0)