Update dependency org.jenkins-ci.plugins:ec2 to v1609

Author: renovate[bot]

integrations/pom.xml

@@ -228,7 +228,7 @@
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>ec2</artifactId>
-      <version>2.0.6</version>
+      <version>1609.v53b_02a_b_9e52d</version>
       <scope>test</scope>
     </dependency>
     <dependency>