dependency: manage grpc-rls version

pom.xml

@@ -1672,6 +1672,11 @@
                 <artifactId>grpc-protobuf-lite</artifactId>
                 <version>${grpc.version}</version>
             </dependency>
+            <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-rls</artifactId>
+                <version>${grpc.version}</version>
+            </dependency>
             <dependency>
                 <groupId>io.grpc</groupId>
                 <artifactId>grpc-util</artifactId>