Bump govuk_publishing_components from 35.15.3 to 35.15.4

Bumps [govuk_publishing_components](https://github.com/alphagov/govuk_publishing_components) from 35.15.3 to 35.15.4.
- [Changelog](https://github.com/alphagov/govuk_publishing_components/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_publishing_components@v35.15.3...v35.15.4)

---
updated-dependencies:
- dependency-name: govuk_publishing_components
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -187,10 +187,10 @@ GEM
       sentry-rails (~> 5.3)
       sentry-ruby (~> 5.3)
       statsd-ruby (~> 1.5)
-    govuk_personalisation (0.14.0)
+    govuk_personalisation (0.15.0)
       plek (>= 1.9.0)
       rails (>= 6, < 8)
-    govuk_publishing_components (35.15.3)
+    govuk_publishing_components (35.15.4)
       govuk_app_config
       govuk_personalisation (>= 0.7.0)
       kramdown