Fix removed dependency

Author: dagnir

test/codegen-generated-classes-test/pom.xml

@@ -145,6 +145,11 @@
             <artifactId>retries-spi</artifactId>
             <version>${awsjavasdk.version}</version>
         </dependency>
+        <dependency>
+            <groupId>software.amazon.awssdk</groupId>
+            <artifactId>smithy-rpcv2-protocol</artifactId>
+            <version>${awsjavasdk.version}</version>
+        </dependency>
         <dependency>
             <artifactId>netty-nio-client</artifactId>
             <groupId>software.amazon.awssdk</groupId>