Bump junit from 4.11 to 4.13.1

Bumps [junit](https://github.com/junit-team/junit4) from 4.11 to 4.13.1.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.11.md)
- [Commits](junit-team/junit4@r4.11...r4.13.1)

Signed-off-by: dependabot[bot] <support@github.com>

dropwizard-bom/pom.xml

@@ -582,7 +582,7 @@
             <dependency>
                 <groupId>junit</groupId>
                 <artifactId>junit</artifactId>
-                <version>4.12</version>
+                <version>4.13.1</version>
             </dependency>
             <dependency>
                 <groupId>org.hamcrest</groupId>

pom.xml

@@ -56,7 +56,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <maven.site.deploy.skip>true</maven.site.deploy.skip>
-        <junit.version>4.12</junit.version>
+        <junit.version>4.13.1</junit.version>
         <assertj.version>3.2.0</assertj.version>
         <mockito.version>1.10.19</mockito.version>
     </properties>