Upgrade: Bump nokogiri from 1.11.5 to 1.11.6

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.11.5 to 1.11.6.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.11.5...v1.11.6)

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

Gemfile.lock

@@ -21,7 +21,7 @@ GEM
     json (2.5.1)
     mini_portile2 (2.5.1)
     minitest (5.14.4)
-    nokogiri (1.11.5)
+    nokogiri (1.11.6)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     racc (1.5.2)