Bump nokogiri from 1.12.3 to 1.12.5

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.12.3 to 1.12.5.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.12.3...v1.12.5)

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

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

Gemfile.lock

@@ -248,7 +248,9 @@ GEM
     net-http-persistent (4.0.1)
       connection_pool (~> 2.2)
     nio4r (2.5.8)
-    nokogiri (1.12.3-x86_64-darwin)
+    nokogiri (1.12.5-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.12.5-x86_64-linux)
       racc (~> 1.4)
     nokogumbo (2.0.5)
       nokogiri (~> 1.8, >= 1.8.4)
@@ -530,6 +532,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-18
+  x86_64-linux
 
 DEPENDENCIES
   better_errors