deps: fix declared dependencies (#8)

Author: chingor13

grpc-google-cloud-automl-v1beta1/pom.xml

@@ -29,6 +29,10 @@
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>proto-google-common-protos</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-cloud-automl-v1beta1</artifactId>