Bump io.confluent:kafka-avro-serializer from 7.5.3 to 7.6.0

Bumps [io.confluent:kafka-avro-serializer](https://github.com/confluentinc/schema-registry) from 7.5.3 to 7.6.0.
- [Commits](confluentinc/schema-registry@v7.5.3...v7.6.0)

---
updated-dependencies:
- dependency-name: io.confluent:kafka-avro-serializer
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle.kts

@@ -37,7 +37,7 @@ subprojects {
     implementation("org.springframework.boot:spring-boot-starter-webflux")
     implementation("org.springframework.cloud:spring-cloud-starter-stream-kafka")
 
-    implementation("io.confluent:kafka-avro-serializer:7.5.3")
+    implementation("io.confluent:kafka-avro-serializer:7.6.0")
     implementation("org.apache.avro:avro:1.11.3")
 
     testImplementation("org.springframework.boot:spring-boot-starter-test")