Bump maven-source-plugin from 3.0.1 to 3.2.1 in /core

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](https://github.com/apache/maven-source-plugin/compare/maven-source-plugin-3.0.1...maven-source-plugin-3.2.1)

Signed-off-by: dependabot[bot] <support@github.com>
Change-Id: I8b5b492781c893c413c7556fe805117adfec728a
diff --git a/core/pom.xml b/core/pom.xml
index 956b71f..ab4fa3f 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -79,7 +79,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>3.0.1</version>
+				<version>3.2.1</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>