Bump govuk_app_config from 4.3.0 to 4.4.1

Bumps [govuk_app_config](https://github.com/alphagov/govuk_app_config) from 4.3.0 to 4.4.1.
- [Release notes](https://github.com/alphagov/govuk_app_config/releases)
- [Changelog](https://github.com/alphagov/govuk_app_config/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_app_config@v4.3.0...v4.4.1)

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

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

Gemfile.lock

@@ -121,8 +121,9 @@ GEM
       rest-client (~> 2.0)
     globalid (1.0.0)
       activesupport (>= 5.0)
-    govuk_app_config (4.3.0)
+    govuk_app_config (4.4.1)
       logstasher (>= 1.2.2, < 2.2.0)
+      prometheus_exporter (~> 2.0.2)
       puma (~> 5.0)
       sentry-rails (~> 4.5.0)
       sentry-ruby (~> 4.5.0)
@@ -208,6 +209,8 @@ GEM
     percy-capybara (5.0.0)
       capybara (>= 3)
     plek (4.0.0)
+    prometheus_exporter (2.0.2)
+      webrick
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)