Bump nokogiri from 1.10.10 to 1.15.5

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.10 to 1.15.5.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.10...v1.15.5)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -79,19 +79,21 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
     mini_magick (4.9.4)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.5)
     minitest (5.14.2)
     neat (3.0.0)
       sass (~> 3.4)
       thor (~> 0.19)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.15.5)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
     parallel (1.19.2)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (5.0.4)
+    racc (1.7.3)
     rack (2.2.8)
     rainbow (3.0.0)
     rake (12.3.3)