deps: update dependency org.easymock:easymock to v5.1.0 (#964)

* deps: update dependency org.easymock:easymock to v5.1.0

* 🦉 Updates from OwlBot post-processor

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>

pom.xml

@@ -15,7 +15,7 @@
 
   <properties>
     <logback.version>1.2.11</logback.version>
-    <easymock.version>5.0.1</easymock.version>
+    <easymock.version>5.1.0</easymock.version>
     <truth.version>1.1.3</truth.version>
     <logging.version>3.13.7</logging.version>
     <slf4j.version>1.7.36</slf4j.version>