build(deps): bump protobufVersion from 4.28.2 to 4.29.3 in /hiero-dependency-versions (#541)

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Author: dependabot[bot]

hiero-dependency-versions/build.gradle.kts

@@ -13,7 +13,7 @@ dependencies.constraints {
     val grpcIoVersion = "1.70.0"
     val helidonVersion = "4.1.6"
     val pbjVersion = "0.9.12"
-    val protobufVersion = "4.28.2"
+    val protobufVersion = "4.29.3"
     val swirldsVersion = "0.58.1"
 
     api("com.github.luben:zstd-jni:1.5.6-8") { because("com.github.luben.zstd_jni") }