Merge pull request #639 from maxmind/dependabot/maven/org.apache.maven.plugins-maven-source-plugin-3.4.0

Bump org.apache.maven.plugins:maven-source-plugin from 3.3.1 to 3.4.0

Author: horgh

pom.xml

@@ -233,7 +233,7 @@
             <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>