Bump govuk_app_config from 9.17.14 to 9.17.15

Bumps [govuk_app_config](https://github.com/alphagov/govuk_app_config) from 9.17.14 to 9.17.15.
- [Changelog](https://github.com/alphagov/govuk_app_config/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_app_config@v9.17.14...v9.17.15)

---
updated-dependencies:
- dependency-name: govuk_app_config
  dependency-version: 9.17.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -136,7 +136,7 @@ GEM
       multi_json (~> 1.11)
       os (>= 0.9, < 2.0)
       signet (>= 0.16, < 2.a)
-    govuk_app_config (9.17.14)
+    govuk_app_config (9.17.15)
       logstasher (~> 2.1)
       opentelemetry-exporter-otlp (>= 0.25, < 0.31)
       opentelemetry-instrumentation-all (>= 0.39.1, < 0.79.0)
@@ -339,7 +339,7 @@ GEM
     opentelemetry-instrumentation-gruf (0.3.0)
       opentelemetry-api (>= 1.0.0)
       opentelemetry-instrumentation-base (~> 0.23.0)
-    opentelemetry-instrumentation-http (0.25.0)
+    opentelemetry-instrumentation-http (0.25.1)
       opentelemetry-api (~> 1.0)
       opentelemetry-instrumentation-base (~> 0.23.0)
     opentelemetry-instrumentation-http_client (0.23.0)
@@ -479,7 +479,7 @@ GEM
     rainbow (3.1.1)
     rake (13.3.0)
     rbtree (0.4.6)
-    rdoc (6.14.1)
+    rdoc (6.14.2)
       erb
       psych (>= 4.0.0)
     redis (5.4.0)