Bump protobuf-java.version from 4.29.0 to 4.29.3 (#4555)

Bumps `protobuf-java.version` from 4.29.0 to 4.29.3.

Updates `com.google.protobuf:protobuf-java` from 4.29.0 to 4.29.3
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

Updates `com.google.protobuf:protobuf-java-util` from 4.29.0 to 4.29.3

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.google.protobuf:protobuf-java-util
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

components/api/api-etcd/pom.xml

@@ -66,7 +66,7 @@
 		<license.header.location>../../../licensing-header.txt</license.header.location>
 		<parent.pom.folder>../../../</parent.pom.folder>
 
-		<protobuf-java.version>4.29.0</protobuf-java.version>
+		<protobuf-java.version>4.29.3</protobuf-java.version>
 	</properties>
 
 </project>