deps: update dependency org.easymock:easymock to v4 (#614)

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Author: renovate-bot

pom.xml

@@ -186,7 +186,7 @@
  <dependency>
  <groupId>org.easymock</groupId>
  <artifactId>easymock</artifactId>
- <version>3.6</version>
+ <version>4.3</version>
  <scope>test</scope>
  </dependency>
  </dependencies>