Add version 3.20.0 to plugin history

Author: michael-o

pom.xml

@@ -510,6 +510,11 @@ under the License.
           <artifactId>maven-plugin-report-plugin</artifactId>
           <configuration>
             <requirementsHistories>
+              <requirementsHistory>
+                <version>3.20.0</version>
+                <maven>3.6.3</maven>
+                <jdk>1.8</jdk>
+              </requirementsHistory>
               <requirementsHistory>
                 <version>3.12.0</version>
                 <maven>3.2.5</maven>