build(deps-dev): bump org.apache.maven.plugins:maven-source-plugin from 3.3.1 to 3.4.0 (#388)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daniel Heid <mail@daniel-heid.de>

Author: dependabot[bot]

pom.xml

@@ -226,7 +226,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>3.3.1</version>
+                <version>3.4.0</version>
                 <executions>
                     <execution>
                         <id>attach-sources</id>