chore(deps): bump maven-source-plugin from 2.2.1 to 3.2.1 (#563)

Bumps [maven-source-plugin](https://github.com/apache/maven-source-plugin) from 2.2.1 to 3.2.1.
- [Release notes](https://github.com/apache/maven-source-plugin/releases)
- [Commits](apache/maven-source-plugin@maven-source-plugin-2.2.1...maven-source-plugin-3.2.1)

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

pom.xml

@@ -298,7 +298,7 @@
             <!-- Package Phase -->
             <plugin>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>2.2.1</version>
+                <version>3.2.1</version>
                 <executions>
                     <execution>
                         <id>attach-sources</id>