Build(deps): bump govspeak from 10.8.7 to 10.8.8

Bumps [govspeak](https://github.com/alphagov/govspeak) from 10.8.7 to 10.8.8.
- [Changelog](https://github.com/alphagov/govspeak/blob/main/CHANGELOG.md)
- [Commits](alphagov/govspeak@v10.8.7...v10.8.8)

---
updated-dependencies:
- dependency-name: govspeak
  dependency-version: 10.8.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -76,7 +76,7 @@ GEM
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
       uri (>= 0.13.1)
-    addressable (2.8.8)
+    addressable (2.8.9)
       public_suffix (>= 2.0.2, < 8.0)
     afm (1.0.0)
     ast (2.4.3)
@@ -174,9 +174,9 @@ GEM
       rake (~> 13.3)
     googleapis-common-protos-types (1.22.0)
       google-protobuf (~> 4.26)
-    govspeak (10.8.7)
+    govspeak (10.8.8)
       actionview (>= 6, < 8.1.3)
-      addressable (>= 2.3.8, < 2.8.9)
+      addressable (>= 2.3.8, < 2.8.10)
       govuk_publishing_components (>= 43)
       htmlentities (~> 4)
       i18n (>= 0.7, < 1.14.9)