build(deps): bump govuk_web_banners from 1.21.1 to 1.22.2

Bumps [govuk_web_banners](https://github.com/alphagov/govuk_web_banners) from 1.21.1 to 1.22.2.
- [Changelog](https://github.com/alphagov/govuk_web_banners/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_web_banners@v1.21.1...v1.22.2)

---
updated-dependencies:
- dependency-name: govuk_web_banners
  dependency-version: 1.22.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -206,7 +206,7 @@ GEM
       capybara (>= 3.36)
       puma
       selenium-webdriver (>= 4.0)
-    govuk_web_banners (1.21.1)
+    govuk_web_banners (1.22.2)
       govuk_app_config (>= 9)
       govuk_publishing_components
       rails (>= 7)