Bump nokogiri from 1.10.9 to 1.12.5

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.9 to 1.12.5.
- [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/v1.10.9...v1.12.5)

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

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

Gemfile.lock

@@ -149,7 +149,7 @@ GEM
     method_source (1.0.0)
     mimemagic (0.3.4)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     mini_racer (0.2.6)
       libv8 (>= 6.9.411)
     minitest (5.14.0)
@@ -157,8 +157,9 @@ GEM
       net-ssh (>= 2.6.5)
     net-ssh (5.1.0)
     nio4r (2.5.8)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     opal (0.11.4)
       ast (>= 2.3.0)
       hike (~> 1.2)
@@ -189,6 +190,7 @@ GEM
     public_suffix (3.0.3)
     puma (4.3.9)
       nio4r (~> 2.0)
+    racc (1.6.0)
     rack (2.2.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)