chore(deps): Bump io.grpc:protoc-gen-grpc-java

Bumps [io.grpc:protoc-gen-grpc-java](https://github.com/grpc/grpc-java) from 1.71.0 to 1.72.0.
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.71.0...v1.72.0)

---
updated-dependencies:
- dependency-name: io.grpc:protoc-gen-grpc-java
  dependency-version: 1.72.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pbj-core/hiero-dependency-versions/build.gradle.kts

@@ -53,7 +53,7 @@ dependencies.constraints {
     // Code generation
     api("org.antlr:antlr4:$antlr")
     api("com.google.protobuf:protoc:$protobuf")
-    api("io.grpc:protoc-gen-grpc-java:1.71.0")
+    api("io.grpc:protoc-gen-grpc-java:1.72.0")
 
     // Testing only
     api("com.google.guava:guava:33.4.7-jre") { because("com.google.common") }