Bump nokogiri from 1.14.2 to 1.15.2 in /examples/cloud-run

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.14.2 to 1.15.2.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.14.2...v1.15.2)

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

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

examples/cloud-run/Gemfile.lock

@@ -162,7 +162,7 @@ GEM
     memoist (0.16.2)
     method_source (1.0.0)
     mini_mime (1.1.2)
-    mini_portile2 (2.8.1)
+    mini_portile2 (2.8.2)
     minitest (5.18.1)
     multi_json (1.15.0)
     net-imap (0.3.4)
@@ -175,15 +175,15 @@ GEM
     net-smtp (0.3.3)
       net-protocol
     nio4r (2.5.8)
-    nokogiri (1.14.2)
-      mini_portile2 (~> 2.8.0)
+    nokogiri (1.15.2)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     os (1.1.4)
     public_suffix (5.0.1)
     puma (5.6.4)
       nio4r (~> 2.0)
     raabro (1.4.0)
-    racc (1.6.2)
+    racc (1.7.1)
     rack (2.2.6.4)
     rack-test (2.1.0)
       rack (>= 1.3)