Update Netty and GRPC versions.

@@ -60,11 +60,12 @@
         <velocity-tools.version>2.0</velocity-tools.version>
         <mail.version>1.4.3</mail.version>
         <curator.version>4.2.0</curator.version>
+        <zookeeper.version>3.5.5</zookeeper.version>
         <protobuf.version>3.6.1</protobuf.version>
-        <grpc.version>1.19.0</grpc.version>
+        <grpc.version>1.22.1</grpc.version>
         <lombok.version>1.16.18</lombok.version>
         <paho.client.version>1.1.0</paho.client.version>
-        <netty.version>4.1.34.Final</netty.version>
+        <netty.version>4.1.37.Final</netty.version>
         <os-maven-plugin.version>1.5.0</os-maven-plugin.version>
         <rabbitmq.version>4.8.0</rabbitmq.version>
         <surfire.version>2.19.1</surfire.version>
@@ -550,6 +551,11 @@
                 <version>${curator.version}</version>
             </dependency>
             <dependency>
+                <groupId>org.apache.zookeeper</groupId>
+                <artifactId>zookeeper</artifactId>
+                <version>${zookeeper.version}</version>
+            </dependency>
+            <dependency>
                 <groupId>com.jayway.jsonpath</groupId>
                 <artifactId>json-path</artifactId>
                 <version>${json-path.version}</version>
@@ -707,6 +713,21 @@
                 <version>${grpc.version}</version>
             </dependency>
             <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-alts</artifactId>
+                <version>${grpc.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-auth</artifactId>
+                <version>${grpc.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.grpc</groupId>
+                <artifactId>grpc-api</artifactId>
+                <version>${grpc.version}</version>
+            </dependency>
+            <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-test</artifactId>
                 <version>${spring.version}</version>

@@ -36,8 +36,8 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <main.dir>${basedir}/../..</main.dir>
         <aws.sdk.version>1.11.323</aws.sdk.version>
-        <pubsub.client.version>1.75.0</pubsub.client.version>
-        <google.common.protos.version>1.15.0</google.common.protos.version>
+        <pubsub.client.version>1.83.0</pubsub.client.version>
+        <google.common.protos.version>1.16.0</google.common.protos.version>
     </properties>
 
     <dependencies>