chore(deps): update protobuf to v4.28.2

| datasource | package                             | from   | to     |
| ---------- | ----------------------------------- | ------ | ------ |
| maven      | com.google.protobuf:protoc          | 4.28.1 | 4.28.2 |
| maven      | com.google.protobuf:protobuf-kotlin | 4.28.1 | 4.28.2 |
| maven      | com.google.protobuf:protobuf-java   | 4.28.1 | 4.28.2 |

settings.gradle.kts

@@ -14,7 +14,7 @@ dependencyResolutionManagement {
       version("kotlin", "2.0.20")
       version("logback", "1.5.8")
       version("mutiny-clients", "3.15.1")
-      version("protobuf", "4.28.1")
+      version("protobuf", "4.28.2")
       version("quarkus", "3.15.0")
       version("rxjava", "3.1.9")
       version("rxkotlin", "3.0.1")