Bump junit from 4.11 to 4.13.1 in /spring-batch-elasticsearch (#60)

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

Author: dependabot[bot]

spring-batch-elasticsearch/pom.xml

@@ -12,7 +12,7 @@
 		<spring-batch.version>3.0.1.RELEASE</spring-batch.version>
 		<spring-data-elasticsearch.version>1.0.1.RELEASE</spring-data-elasticsearch.version>
 		<mockito.verion>1.9.5</mockito.verion>
-		<junit.verion>4.11</junit.verion>
+		<junit.verion>4.13.1</junit.verion>
 	</properties>
 
 	<build>