build(deps): bump org.apache.maven.plugins:maven-source-plugin (#158)

Bumps [org.apache.maven.plugins:maven-source-plugin](https://github.com/apache/maven-source-plugin) from 2.2.1 to 3.4.0.
- [Release notes](https://github.com/apache/maven-source-plugin/releases)
- [Commits](apache/maven-source-plugin@maven-source-plugin-2.2.1...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:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

pom.xml

@@ -201,7 +201,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>2.2.1</version>
+				<version>3.4.0</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>