Bump nokogiri from 1.14.3 to 1.15.6

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.14.3 to 1.15.6.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.14.3...v1.15.6)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: indirect
...

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

Gemfile.lock

@@ -26,18 +26,18 @@ GEM
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
-    mini_portile2 (2.8.1)
+    mini_portile2 (2.8.5)
     net-http-digest_auth (1.4.1)
     net-http-persistent (4.0.1)
       connection_pool (~> 2.2)
-    nokogiri (1.14.3)
-      mini_portile2 (~> 2.8.0)
+    nokogiri (1.15.6)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     parallel (1.22.1)
     parser (3.1.2.1)
       ast (~> 2.4.1)
     public_suffix (4.0.6)
-    racc (1.6.2)
+    racc (1.7.3)
     rainbow (3.1.1)
     rake (13.0.1)
     regexp_parser (2.6.0)