Bump nokogiri from 1.14.5 to 1.15.4

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.14.5 to 1.15.4.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sparklemotion/nokogiri/compare/v1.14.5...v1.15.4)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile

@@ -60,7 +60,7 @@ gem 'idn-ruby', require: 'idn'
 gem 'kaminari', '~> 1.2'
 gem 'link_header', '~> 0.0'
 gem 'mime-types', '~> 3.4.1', require: 'mime/types/columnar'
-gem 'nokogiri', '~> 1.14'
+gem 'nokogiri', '~> 1.15'
 gem 'nsa', '~> 0.2'
 gem 'oj', '~> 3.13'
 gem 'ox', '~> 2.14'

Gemfile.lock

@@ -405,7 +405,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
     mini_mime (1.1.2)
-    mini_portile2 (2.8.2)
+    mini_portile2 (2.8.4)
     minitest (5.17.0)
     msgpack (1.6.0)
     multi_json (1.15.0)
@@ -424,8 +424,8 @@ GEM
       net-protocol
     net-ssh (7.0.1)
     nio4r (2.5.9)
-    nokogiri (1.14.5)
-      mini_portile2 (~> 2.8.0)
+    nokogiri (1.15.4)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     nsa (0.2.8)
       activesupport (>= 4.2, < 7)
@@ -496,7 +496,7 @@ GEM
     pundit (2.3.0)
       activesupport (>= 3.0.0)
     raabro (1.4.0)
-    racc (1.6.2)
+    racc (1.7.1)
     rack (2.2.7)
     rack-attack (6.6.1)
       rack (>= 1.0, < 3)
@@ -822,7 +822,7 @@ DEPENDENCIES
   memory_profiler
   mime-types (~> 3.4.1)
   net-ldap (~> 0.17)
-  nokogiri (~> 1.14)
+  nokogiri (~> 1.15)
   nsa (~> 0.2)
   oj (~> 3.13)
   omniauth (~> 1.9)