Bump sanitize from 4.6.4 to 4.6.6 (#8783)

Bumps [sanitize](https://github.com/rgrove/sanitize) from 4.6.4 to 4.6.6.
- [Release notes](https://github.com/rgrove/sanitize/releases)
- [Changelog](https://github.com/rgrove/sanitize/blob/master/HISTORY.md)
- [Commits](https://github.com/rgrove/sanitize/compare/v4.6.4...v4.6.6)

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

Gemfile.lock

@@ -529,7 +529,7 @@ GEM
     rufus-scheduler (3.4.2)
       et-orbi (~> 1.0)
     safe_yaml (1.0.4)
-    sanitize (4.6.4)
+    sanitize (4.6.6)
       crass (~> 1.0.2)
       nokogiri (>= 1.4.4)
       nokogumbo (~> 1.4)