chore(deps): bump com.google.protobuf:protoc

Bumps [com.google.protobuf:protoc](https://github.com/protocolbuffers/protobuf) from 3.25.4 to 4.29.1.
- [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-major
...

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

hiero-dependency-versions/build.gradle.kts

@@ -36,7 +36,7 @@ dependencies.constraints {
     api("com.google.guava:guava:33.3.1-android") { because("com.google.common") }
     api("com.fasterxml.jackson.core:jackson-core:2.18.0") { because("com.fasterxml.jackson.core") }
 
-    api("com.google.protobuf:protoc:3.25.4")
+    api("com.google.protobuf:protoc:4.29.1")
     api("io.grpc:protoc-gen-grpc-java:1.66.0")
 
     // Examples