Bump nokogiri from 1.16.5 to 1.18.3

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.16.5 to 1.18.3.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/v1.18.3/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.16.5...v1.18.3)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -24,20 +24,22 @@ GEM
       rdf (~> 3.3)
     link_header (0.0.8)
     matrix (0.4.2)
+    mini_portile2 (2.8.8)
     multi_json (1.15.0)
-    nokogiri (1.16.5-aarch64-linux)
+    nokogiri (1.18.3)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.16.5-arm-linux)
+    nokogiri (1.18.3-aarch64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.16.5-arm64-darwin)
+    nokogiri (1.18.3-arm-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.16.5-x86-linux)
+    nokogiri (1.18.3-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.5-x86_64-darwin)
+    nokogiri (1.18.3-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.5-x86_64-linux)
+    nokogiri (1.18.3-x86_64-linux-gnu)
       racc (~> 1.4)
-    racc (1.7.3)
+    racc (1.8.1)
     rack (3.0.12)
     rake (13.1.0)
     rdf (3.3.1)