Bump org.apache.maven.plugins:maven-source-plugin from 3.2.1 to 3.3.1 (#1127)

Bumps [org.apache.maven.plugins:maven-source-plugin](https://github.com/apache/maven-source-plugin) from 3.2.1 to 3.3.1.
- [Release notes](https://github.com/apache/maven-source-plugin/releases)
- [Commits](apache/maven-source-plugin@maven-source-plugin-3.2.1...maven-source-plugin-3.3.1)

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

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

Author: dependabot[bot]

pom.xml

@@ -174,7 +174,7 @@
                 </plugin>
                 <plugin>
                     <artifactId>maven-source-plugin</artifactId>
-                    <version>3.2.1</version>
+                    <version>3.3.1</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-enforcer-plugin</artifactId>