Version bump

Author: phax

ph-csscompress-maven-plugin/pom.xml

@@ -130,7 +130,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-plugin-plugin</artifactId>
-        <version>3.12.0</version>
+        <version>3.13.0</version>
       </plugin>
     </plugins>
   </reporting>