Bump com.google.protobuf:protoc from 4.28.3 to 4.29.0

Bumps [com.google.protobuf:protoc](https://github.com/protocolbuffers/protobuf) from 4.28.3 to 4.29.0.
- [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)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protoc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

digitalassetlinks/build.gradle

@@ -107,7 +107,7 @@ signing {
 
 protobuf {
     protoc {
-        def protoc_ver = '4.28.3'
+        def protoc_ver = '4.29.0'
         artifact = "com.google.protobuf:protoc:$protoc_ver"   // Download from repositories
     }
     generateProtoTasks {