Bumping gax to 1.28.0 (bidi streaming updates) (#3375)

Author: garrettjonesgoogle

README.md

@@ -359,3 +359,4 @@ Apache 2.0 - See [LICENSE] for more information.
 [cloud-platform]: https://cloud.google.com/
 [cloud-platform-docs]: https://cloud.google.com/docs/
 [client-lib-docs]: https://googlecloudplatform.github.io/google-cloud-java/google-cloud-clients/apidocs/index.html
+

google-cloud-bom/pom.xml

@@ -150,34 +150,34 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>1.27.0</version>
+        <version>1.28.0</version>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>1.27.0</version>
+        <version>1.28.0</version>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-grpc</artifactId>
-        <version>1.27.0</version>
+        <version>1.28.0</version>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-grpc</artifactId>
-        <version>1.27.0</version>
+        <version>1.28.0</version>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-httpjson</artifactId>
-        <version>0.44.0</version>
+        <version>0.45.0</version>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-httpjson</artifactId>
-        <version>0.44.0</version>
+        <version>0.45.0</version>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>

google-cloud-clients/pom.xml

@@ -156,7 +156,7 @@
     <site.installationModule>google-cloud-clients</site.installationModule>
     <bom.version>0.51.1-alpha-SNAPSHOT</bom.version><!-- {x-version-update:google-cloud-bom:current} -->
     <api-client.version>1.23.0</api-client.version>
-    <gax.version>1.27.0</gax.version>
+    <gax.version>1.28.0</gax.version>
     <google.auth.version>0.9.1</google.auth.version>
     <grpc.version>1.12.0</grpc.version>
     <nettyssl.version>2.0.7.Final</nettyssl.version>