Bump govuk_design_system_formbuilder from 4.0.0 to 5.0.0

Bumps [govuk_design_system_formbuilder](https://github.com/x-govuk/govuk-form-builder) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/x-govuk/govuk-form-builder/releases)
- [Commits](x-govuk/govuk-form-builder@v4.0.0...v5.0.0)

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

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

Gemfile.lock

@@ -219,7 +219,7 @@ GEM
       html-attributes-utils (~> 1.0.0, >= 1.0.0)
       pagy (~> 6.0)
       view_component (~> 3.0.0)
-    govuk_design_system_formbuilder (4.0.0)
+    govuk_design_system_formbuilder (5.0.0)
       actionview (>= 6.1)
       activemodel (>= 6.1)
       activesupport (>= 6.1)
@@ -230,7 +230,7 @@ GEM
     grover (1.1.5)
       combine_pdf (~> 1.0)
       nokogiri (~> 1.0)
-    html-attributes-utils (1.0.0)
+    html-attributes-utils (1.0.2)
       activesupport (>= 6.1.4.4)
     httpclient (2.8.3)
     i18n (1.14.1)