deps: update dependency org.easymock:easymock to v4 (#830)

* deps: update dependency org.easymock:easymock to v4 * 🦉 Updates from OwlBot See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: renovate-bot

pom.xml

@@ -91,7 +91,7 @@
  <dependency>
  <groupId>org.easymock</groupId>
  <artifactId>easymock</artifactId>
- <version>3.6</version>
+ <version>4.3</version>
  <exclusions>
  <exclusion>
  <groupId>org.objenesis</groupId>