build(deps): bump kafka-libs.version from 7.6.2 to 7.7.0 (#669)

Bumps `kafka-libs.version` from 7.6.2 to 7.7.0.

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

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

Updates `io.confluent:kafka-protobuf-serializer` 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
- dependency-name: io.confluent:kafka-schema-registry-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.confluent:kafka-protobuf-serializer
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -22,7 +22,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <protobuf.version>4.27.2</protobuf.version>
         <testcontainers.version>1.20.0</testcontainers.version>
-        <kafka-libs.version>7.6.2</kafka-libs.version>
+        <kafka-libs.version>7.7.0</kafka-libs.version>
     </properties>
 
     <scm>