chore: bump org.apache.maven.plugins:maven-source-plugin (#2443)

Merged by Claude Code. @phipag approved this action.

Author: dependabot[bot]

pom.xml

@@ -99,7 +99,7 @@
         <jacoco-maven-plugin.version>0.8.11</jacoco-maven-plugin.version>
         <nexus-staging-maven-plugin.version>1.6.13</nexus-staging-maven-plugin.version>
         <maven-javadoc-plugin.version>3.12.0</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-gpg-plugin.version>3.2.1</maven-gpg-plugin.version>
         <aspectj-maven-plugin.version>1.14.1</aspectj-maven-plugin.version>
         <maven-surefire-plugin.version>3.5.4</maven-surefire-plugin.version>