Update dependency org.apache.maven.plugins:maven-source-plugin to v3.4.0

Author: renovate[bot]

pom.xml

@@ -52,7 +52,7 @@
         <maven-compiler-plugin-version>3.14.1</maven-compiler-plugin-version>
         <maven-jar-plugin-version>3.5.0</maven-jar-plugin-version>
         <jacoco-maven-plugin-version>0.8.14</jacoco-maven-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-gpg-plugin-version>3.2.8</maven-gpg-plugin-version>
         <central-publishing-maven-plugin-version>0.7.0</central-publishing-maven-plugin-version>