Bump nokogiri from 1.13.10 to 1.15.6 in /scripts/country-ca

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.13.10 to 1.15.6.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.13.10...v1.15.6)

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

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

scripts/country-ca/Gemfile.lock

@@ -31,14 +31,12 @@ GEM
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2023.0218.1)
+    mini_portile2 (2.8.6)
     net-http-digest_auth (1.4.1)
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
-    nokogiri (1.13.10-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.13.10-x86_64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.13.10-x86_64-linux)
+    nokogiri (1.15.6)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     public_suffix (5.0.1)
     racc (1.7.3)