Bump govuk_publishing_components from 39.2.4 to 40.0.0

Bumps [govuk_publishing_components](https://github.com/alphagov/govuk_publishing_components) from 39.2.4 to 40.0.0.
- [Changelog](https://github.com/alphagov/govuk_publishing_components/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_publishing_components@v39.2.4...v40.0.0)

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

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

Gemfile.lock

@@ -192,7 +192,7 @@ GEM
     govuk_personalisation (0.16.0)
       plek (>= 1.9.0)
       rails (>= 6, < 8)
-    govuk_publishing_components (39.2.4)
+    govuk_publishing_components (40.0.0)
       govuk_app_config
       govuk_personalisation (>= 0.7.0)
       kramdown
@@ -647,7 +647,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.3.1)
+    rexml (3.3.2)
       strscan
     rouge (4.3.0)
     rspec (3.13.0)