Bump maven-clean-plugin from 3.2.0 to 3.3.1 (closes #144)

Bumps [maven-clean-plugin](https://github.com/apache/maven-clean-plugin) from 3.2.0 to 3.3.1.
- [Release notes](https://github.com/apache/maven-clean-plugin/releases)
- [Commits](https://github.com/apache/maven-clean-plugin/compare/maven-clean-plugin-3.2.0...maven-clean-plugin-3.3.1)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-clean-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Change-Id: I0da60c8f24b960016d57933a5be5a61ac5f05cb0
Reviewed-on: https://korap.ids-mannheim.de/gerrit/c/KorAP/Koral/+/7296
Reviewed-by: Nils Diewald <nils@diewald-online.de>
diff --git a/pom.xml b/pom.xml
index 6673069..1566115 100644
--- a/pom.xml
+++ b/pom.xml
@@ -157,7 +157,7 @@
 		  <plugin>
 			  <groupId>org.apache.maven.plugins</groupId>
 			  <artifactId>maven-clean-plugin</artifactId>
-		    <version>3.2.0</version>
+		    <version>3.3.1</version>
 		    <configuration>
 		      <filesets>
 		        <fileset>