Bump govuk_app_config from 9.15.5 to 9.15.6

Bumps [govuk_app_config](https://github.com/alphagov/govuk_app_config) from 9.15.5 to 9.15.6.
- [Changelog](https://github.com/alphagov/govuk_app_config/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_app_config@v9.15.5...v9.15.6)

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

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

Gemfile.lock

@@ -145,7 +145,7 @@ GEM
     docile (1.4.0)
     domain_name (0.6.20240107)
     drb (2.2.1)
-    erubi (1.13.0)
+    erubi (1.13.1)
     execjs (2.9.1)
     factory_bot (6.5.0)
       activesupport (>= 5.0.0)
@@ -204,10 +204,10 @@ GEM
       nokogiri (~> 1.12)
       rinku (~> 2.0)
       sanitize (~> 6)
-    govuk_app_config (9.15.5)
+    govuk_app_config (9.15.6)
       logstasher (~> 2.1)
       opentelemetry-exporter-otlp (>= 0.25, < 0.30)
-      opentelemetry-instrumentation-all (>= 0.39.1, < 0.70.0)
+      opentelemetry-instrumentation-all (>= 0.39.1, < 0.71.0)
       opentelemetry-sdk (~> 1.2)
       plek (>= 4, < 6)
       prometheus_exporter (~> 2.0)
@@ -351,33 +351,33 @@ GEM
       opentelemetry-common (~> 0.21)
     opentelemetry-helpers-sql-obfuscation (0.2.1)
       opentelemetry-common (~> 0.21)
-    opentelemetry-instrumentation-action_mailer (0.2.0)
+    opentelemetry-instrumentation-action_mailer (0.3.0)
       opentelemetry-api (~> 1.0)
-      opentelemetry-instrumentation-active_support (~> 0.1)
+      opentelemetry-instrumentation-active_support (~> 0.7)
       opentelemetry-instrumentation-base (~> 0.22.1)
     opentelemetry-instrumentation-action_pack (0.10.0)
       opentelemetry-api (~> 1.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
       opentelemetry-instrumentation-rack (~> 0.21)
-    opentelemetry-instrumentation-action_view (0.7.3)
+    opentelemetry-instrumentation-action_view (0.8.0)
       opentelemetry-api (~> 1.0)
-      opentelemetry-instrumentation-active_support (~> 0.6)
+      opentelemetry-instrumentation-active_support (~> 0.7)
       opentelemetry-instrumentation-base (~> 0.22.1)
     opentelemetry-instrumentation-active_job (0.7.8)
       opentelemetry-api (~> 1.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
-    opentelemetry-instrumentation-active_model_serializers (0.20.3)
+    opentelemetry-instrumentation-active_model_serializers (0.21.0)
       opentelemetry-api (~> 1.0)
-      opentelemetry-instrumentation-active_support (>= 0.6.0)
+      opentelemetry-instrumentation-active_support (>= 0.7.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
     opentelemetry-instrumentation-active_record (0.8.1)
       opentelemetry-api (~> 1.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
-    opentelemetry-instrumentation-active_support (0.6.0)
+    opentelemetry-instrumentation-active_support (0.7.0)
       opentelemetry-api (~> 1.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
-    opentelemetry-instrumentation-all (0.69.1)
-      opentelemetry-instrumentation-active_model_serializers (~> 0.20.1)
+    opentelemetry-instrumentation-all (0.70.0)
+      opentelemetry-instrumentation-active_model_serializers (~> 0.21.0)
       opentelemetry-instrumentation-aws_lambda (~> 0.1.0)
       opentelemetry-instrumentation-aws_sdk (~> 0.7.0)
       opentelemetry-instrumentation-bunny (~> 0.21.0)
@@ -401,7 +401,7 @@ GEM
       opentelemetry-instrumentation-que (~> 0.8.0)
       opentelemetry-instrumentation-racecar (~> 0.3.0)
       opentelemetry-instrumentation-rack (~> 0.25.0)
-      opentelemetry-instrumentation-rails (~> 0.33.0)
+      opentelemetry-instrumentation-rails (~> 0.34.0)
       opentelemetry-instrumentation-rake (~> 0.2.1)
       opentelemetry-instrumentation-rdkafka (~> 0.4.0)
       opentelemetry-instrumentation-redis (~> 0.25.1)
@@ -488,14 +488,14 @@ GEM
     opentelemetry-instrumentation-rack (0.25.0)
       opentelemetry-api (~> 1.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
-    opentelemetry-instrumentation-rails (0.33.1)
+    opentelemetry-instrumentation-rails (0.34.0)
       opentelemetry-api (~> 1.0)
-      opentelemetry-instrumentation-action_mailer (~> 0.2.0)
+      opentelemetry-instrumentation-action_mailer (~> 0.3.0)
       opentelemetry-instrumentation-action_pack (~> 0.10.0)
-      opentelemetry-instrumentation-action_view (~> 0.7.0)
+      opentelemetry-instrumentation-action_view (~> 0.8.0)
       opentelemetry-instrumentation-active_job (~> 0.7.0)
       opentelemetry-instrumentation-active_record (~> 0.8.0)
-      opentelemetry-instrumentation-active_support (~> 0.6.0)
+      opentelemetry-instrumentation-active_support (~> 0.7.0)
       opentelemetry-instrumentation-base (~> 0.22.1)
     opentelemetry-instrumentation-rake (0.2.2)
       opentelemetry-api (~> 1.0)
@@ -567,7 +567,7 @@ GEM
       rack
     rack-session (2.0.0)
       rack (>= 3.0.0)
-    rack-test (2.1.0)
+    rack-test (2.2.0)
       rack (>= 1.3)
     rackup (2.2.1)
       rack (>= 3)