Merge pull request #1802 from google/dependabot/maven/codegen/junit-junit-4.13.1

Bump junit from 3.8.2 to 4.13.1 in /codegen

Author: eamonnmcmanus

codegen/pom.xml

@@ -40,7 +40,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>3.8.2</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>