Bump maven-source-plugin from 3.2.1 to 3.3.0 (#39)

Author: dependabot[bot]

pom.xml

@@ -201,7 +201,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.1</version>
+                <version>3.3.0</version>
                 <executions>
                     <execution>
                         <id>attach-sources</id>