Bump junit from 4.11 to 4.13.1 (#16)

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>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -33,7 +33,7 @@
         <spark.version>3.0.0</spark.version>
         <maven.compiler.version>3.0</maven.compiler.version>
         <java.version>1.8</java.version>
-        <junit.version>4.11</junit.version>
+        <junit.version>4.13.1</junit.version>
         <tensorflow.hadoop.version>1.15.0</tensorflow.hadoop.version>
     </properties>