Bump maven-source-plugin from 3.0.1 to 3.2.1 (#596)

Bumps [maven-source-plugin](https://github.com/apache/maven-source-plugin) from 3.0.1 to 3.2.1.
- [Release notes](https://github.com/apache/maven-source-plugin/releases)
- [Commits](apache/maven-source-plugin@maven-source-plugin-3.0.1...maven-source-plugin-3.2.1)

---
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] <support@github.com>

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

pom.xml

@@ -1011,7 +1011,7 @@
     <maven-repository-plugin.version>2.4</maven-repository-plugin.version>
     <maven-resources-plugin.version>3.1.0</maven-resources-plugin.version>
     <maven-site-plugin.version>3.7.1</maven-site-plugin.version>
-    <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
+    <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
     <!-- Stick with this version of surefire, see Java 5 comments above -->
     <maven-surefire-report-plugin.version>2.21.0</maven-surefire-report-plugin.version>
     <maven-toolchains-plugin.version>1.1</maven-toolchains-plugin.version>