Bump nokogiri from 1.15.3 to 1.16.3 in /spec/dummy-app

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.15.3 to 1.16.3.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.15.3...v1.16.3)

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

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

spec/dummy-app/Gemfile.lock

@@ -155,13 +155,15 @@ GEM
     net-smtp (0.3.3)
       net-protocol
     nio4r (2.5.9)
-    nokogiri (1.15.3-arm64-darwin)
+    nokogiri (1.16.3-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.16.3-x86_64-linux)
       racc (~> 1.4)
     orm_adapter (0.5.0)
     public_suffix (5.0.3)
     puma (5.6.6)
       nio4r (~> 2.0)
-    racc (1.7.1)
+    racc (1.7.3)
     rack (2.2.7)
     rack-test (2.1.0)
       rack (>= 1.3)
@@ -231,6 +233,7 @@ GEM
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
     sqlite3 (1.6.3-arm64-darwin)
+    sqlite3 (1.6.3-x86_64-linux)
     stimulus-rails (1.2.1)
       railties (>= 6.0.0)
     thor (1.2.2)
@@ -262,6 +265,7 @@ GEM
 
 PLATFORMS
   arm64-darwin-21
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap