Update dependency org.apache.maven.plugins:maven-source-plugin to v3.2.1

Author: renovate-bot

pom.xml

@@ -48,7 +48,7 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <doma.version>2.43.0</doma.version>
         <spring-boot.version>1.5.22.RELEASE</spring-boot.version>
-        <source-plugin.version>3.2.0</source-plugin.version>
+        <source-plugin.version>3.2.1</source-plugin.version>
         <javadoc-plugin.version>3.2.0</javadoc-plugin.version>
         <nexus-staging-plugin.version>1.6.8</nexus-staging-plugin.version>
         <formatter-maven-plugin.version>2.13.0</formatter-maven-plugin.version>