Bump io.confluent:kafka-avro-serializer from 7.6.2 to 7.7.0

Bumps [io.confluent:kafka-avro-serializer](https://github.com/confluentinc/schema-registry) from 7.6.2 to 7.7.0.
- [Commits](https://github.com/confluentinc/schema-registry/commits/v7.7.0)

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

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

build.gradle.kts

@@ -51,7 +51,7 @@ dependencies {
     implementation("io.prometheus:simpleclient_hotspot:$prometheusVersion")
     implementation("org.jetbrains:annotations:24.1.0")
     implementation("org.apache.avro:avro:1.11.3")
-    implementation("io.confluent:kafka-avro-serializer:7.6.2") {
+    implementation("io.confluent:kafka-avro-serializer:7.7.0") {
         // we want to use the one provided by R&R, not the Confluent-specific one
         exclude(group = "org.apache.kafka", module = "kafka-clients")
     }