[Security] Bump nokogiri from 1.10.7 to 1.11.6

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.7 to 1.11.6. **This update includes security fixes.**
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.7...v1.11.6)

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

Gemfile.lock

@@ -120,14 +120,17 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.3)
     minitest (5.13.0)
     nested_form (0.3.2)
     nio4r (2.5.2)
-    nokogiri (1.10.7)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.6)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     obscenity (1.0.2)
     orm_adapter (0.5.0)
     parallel (1.19.1)
@@ -139,6 +142,7 @@ GEM
     public_suffix (4.0.3)
     puma (4.3.1)
       nio4r (~> 2.0)
+    racc (1.5.2)
     rack (2.1.2)
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)