Bump govspeak from 7.1.1 to 8.0.0

Bumps [govspeak](https://github.com/alphagov/govspeak) from 7.1.1 to 8.0.0.
- [Changelog](https://github.com/alphagov/govspeak/blob/main/CHANGELOG.md)
- [Commits](alphagov/govspeak@v7.1.1...v8.0.0)

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

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

Gemfile.lock

@@ -152,7 +152,7 @@ GEM
     google-protobuf (3.23.4-x86_64-linux)
     googleapis-common-protos-types (1.6.0)
       google-protobuf (~> 3.14)
-    govspeak (7.1.1)
+    govspeak (8.0.0)
       actionview (>= 6)
       addressable (>= 2.3.8, < 3)
       govuk_publishing_components (>= 35.1)