Merge pull request #740 from rabbitmq/dependabot/maven/org.apache.maven.plugins-maven-source-plugin-3.2.1

Bump maven-source-plugin from 3.0.1 to 3.2.1

Author: acogoluegnes

pom.xml

@@ -70,7 +70,7 @@
     <maven.release.plugin.version>2.5.3</maven.release.plugin.version>
     <versions.maven.plugin.version>2.3</versions.maven.plugin.version>
     <maven.resources.plugin.version>3.1.0</maven.resources.plugin.version>
-    <maven.source.plugin.version>3.0.1</maven.source.plugin.version>
+    <maven.source.plugin.version>3.2.1</maven.source.plugin.version>
     <groovy.maven.plugin.version>2.1.1</groovy.maven.plugin.version>
     <groovy.all.version>2.4.8</groovy.all.version>
     <keytool.maven.plugin.version>1.5</keytool.maven.plugin.version>