Merge pull request #888 from rabbitmq/dependabot/maven/org.apache.maven.plugins-maven-source-plugin-3.4.0

Bump org.apache.maven.plugins:maven-source-plugin from 3.3.1 to 3.4.0

Author: michaelklishin

pom.xml

@@ -81,7 +81,7 @@
     <buildnumber.plugin.version>3.2.1</buildnumber.plugin.version>
     <maven-resources-plugin.version>3.4.0</maven-resources-plugin.version>
     <maven-clean-plugin.version>3.5.0</maven-clean-plugin.version>
-    <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
+    <maven-source-plugin.version>3.4.0</maven-source-plugin.version>
     <maven-javadoc-plugin.version>3.12.0</maven-javadoc-plugin.version>
     <maven.jar.plugin.version>3.5.0</maven.jar.plugin.version>
     <build-helper-maven-plugin.version>3.4.0</build-helper-maven-plugin.version>