Bump io.micronaut:micronaut-http-client from 4.6.5 to 4.7.12

Bumps [io.micronaut:micronaut-http-client](https://github.com/micronaut-projects/micronaut-core) from 4.6.5 to 4.7.12.
- [Release notes](https://github.com/micronaut-projects/micronaut-core/releases)
- [Changelog](https://github.com/micronaut-projects/micronaut-core/blob/4.8.x/RELEASE.adoc)
- [Commits](micronaut-projects/micronaut-core@v4.6.5...v4.7.12)

---
updated-dependencies:
- dependency-name: io.micronaut:micronaut-http-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

grails-test-examples/async-events-pubsub-demo/build.gradle

@@ -50,7 +50,7 @@ dependencies {
     runtimeOnly 'com.zaxxer:HikariCP'
 
     testImplementation 'io.micronaut.serde:micronaut-serde-jackson:2.10.2'
-    testImplementation 'io.micronaut:micronaut-http-client:4.6.5'
+    testImplementation 'io.micronaut:micronaut-http-client:4.7.12'
     testImplementation 'org.grails:grails-web-testing-support'
 }