Merge pull request #58 from maxmind/dependabot/maven/org.apache.maven.plugins-maven-source-plugin-3.1.0

Bump maven-source-plugin from 2.2.1 to 3.1.0

Author: oschwald

pom.xml

@@ -67,7 +67,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>2.2.1</version>
+                <version>3.1.0</version>
                 <executions>
                     <execution>
                         <id>attach-sources</id>