bump gax dependency version (#2101)

pongad · web-flow · commit 3168ca3818c5 · 2017-06-01T12:00:53.000+10:00
gax: 1.2.0
gax-grpc: 0.18.0
diff --git a/pom.xml b/pom.xml
@@ -131,8 +131,8 @@
     <api-client.version>1.21.0</api-client.version>
 
     <api-common.version>1.1.0</api-common.version>
-    <gax.version>1.1.0</gax.version>
-    <gax-grpc.version>0.17.0</gax-grpc.version>
+    <gax.version>1.2.0</gax.version>
+    <gax-grpc.version>0.18.0</gax-grpc.version>
     <generatedProto.version>0.1.11</generatedProto.version>
     <google.auth.version>0.6.1</google.auth.version>
     <grpc.version>1.2.0</grpc.version>
