OZG-6710 downgrade grpc.version

ozgcloud-common-dependencies/pom.xml

@@ -58,8 +58,8 @@
 
 		<protoc-jar-plugin.version>3.11.4</protoc-jar-plugin.version>
 
-		<protobuf.version>4.27.3</protobuf.version>
-		<protoc-gen.version>1.66.0</protoc-gen.version>
+		<protobuf.version>3.25.5</protobuf.version>
+		<protoc-gen.version>1.68.0</protoc-gen.version>
 
 		<mapstruct.version>1.6.0</mapstruct.version>
 		<commons-io.version>2.16.1</commons-io.version>