Bump org.apache.maven.plugins:maven-source-plugin from 3.3.1 to 3.4.0 (#33)

Bumps [org.apache.maven.plugins:maven-source-plugin](https://github.com/apache/maven-source-plugin) from 3.3.1 to 3.4.0.
- [Release notes](https://github.com/apache/maven-source-plugin/releases)
- [Commits](apache/maven-source-plugin@maven-source-plugin-3.3.1...maven-source-plugin-3.4.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-source-plugin
  dependency-version: 3.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

pom.xml

@@ -43,7 +43,7 @@
         <maven-compiler-plugin.version>3.15.0</maven-compiler-plugin.version>
         <maven-jar-plugin.version>3.4.2</maven-jar-plugin.version>
         <maven-javadoc-plugin.version>3.11.3</maven-javadoc-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.compiler.release>${java.version}</maven.compiler.release>
         <spotless.version>3.1.0</spotless.version>