Bump govuk_design_system_formbuilder from 2.7.4 to 2.7.5 (#1046)

Bumps [govuk_design_system_formbuilder](https://github.com/DFE-Digital/govuk_design_system_formbuilder) from 2.7.4 to 2.7.5.
- [Release notes](https://github.com/DFE-Digital/govuk_design_system_formbuilder/releases)
- [Commits](x-govuk/govuk-form-builder@v2.7.4...v2.7.5)

---
updated-dependencies:
- dependency-name: govuk_design_system_formbuilder
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Iris Faraway <iris.faraway@gmail.com>

Gemfile.lock

@@ -202,7 +202,7 @@ GEM
       rake (>= 10.0)
     globalid (0.5.2)
       activesupport (>= 5.0)
-    govuk_design_system_formbuilder (2.7.4)
+    govuk_design_system_formbuilder (2.7.5)
       actionview (>= 6.0)
       activemodel (>= 6.0)
       activesupport (>= 6.0)