update libraries to avoid guava related security issues (#440)

* update libraries to avoid guava related security issues
* update all io-grpc libraries

src/grpc_generated/java/examples/pom.xml

@@ -21,17 +21,17 @@
 		<dependency>
 			<groupId>io.grpc</groupId>
 			<artifactId>grpc-netty-shaded</artifactId>
-			<version>1.51.1</version>
+			<version>1.59.1</version>
 		</dependency>
 		<dependency>
 			<groupId>io.grpc</groupId>
 			<artifactId>grpc-protobuf</artifactId>
-			<version>1.51.1</version>
+			<version>1.59.1</version>
 		</dependency>
 		<dependency>
 			<groupId>io.grpc</groupId>
 			<artifactId>grpc-stub</artifactId>
-			<version>1.33.1</version>
+			<version>1.59.1</version>
 		</dependency>
 		<dependency> <!-- necessary for Java 9+ -->
 			<groupId>org.apache.tomcat</groupId>

src/grpc_generated/java/library/pom.xml

@@ -17,17 +17,17 @@
 		<dependency>
 			<groupId>io.grpc</groupId>
 			<artifactId>grpc-netty-shaded</artifactId>
-			<version>1.51.1</version>
+			<version>1.59.1</version>
 		</dependency>
 		<dependency>
 			<groupId>io.grpc</groupId>
 			<artifactId>grpc-protobuf</artifactId>
-			<version>1.51.1</version>
+			<version>1.59.1</version>
 		</dependency>
 		<dependency>
 			<groupId>io.grpc</groupId>
 			<artifactId>grpc-stub</artifactId>
-			<version>1.33.1</version>
+			<version>1.59.1</version>
 		</dependency>
 		<dependency> <!-- necessary for Java 9+ -->
 			<groupId>org.apache.tomcat</groupId>
@@ -58,7 +58,7 @@
 				<configuration>
 					<protocArtifact>com.google.protobuf:protoc:3.12.0:exe:${os.detected.classifier}</protocArtifact>
 					<pluginId>grpc-java</pluginId>
-					<pluginArtifact>io.grpc:protoc-gen-grpc-java:1.33.1:exe:${os.detected.classifier}</pluginArtifact>
+					<pluginArtifact>io.grpc:protoc-gen-grpc-java:1.59.1:exe:${os.detected.classifier}</pluginArtifact>
 				</configuration>
 				<executions>
 					<execution>