deps: update dependency org.easymock:easymock to v4 (googleapis#693)

* deps: update dependency org.easymock:easymock to v4

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java-resourcemanager/google-cloud-resourcemanager/pom.xml

@@ -161,7 +161,7 @@
     <dependency>
       <groupId>org.easymock</groupId>
       <artifactId>easymock</artifactId>
-      <version>3.6</version>
+      <version>4.3</version>
       <scope>test</scope>
       <exclusions>
         <exclusion>