GUACAMOLE-773: Include NPM dependencies when considering generated LICENSE.

pom.xml

@@ -236,6 +236,11 @@
                     <artifactId>maven-assembly-plugin</artifactId>
                     <version>3.3.0</version>
                 </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-resources-plugin</artifactId>
+                    <version>3.2.0</version>
+                </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-surefire-plugin</artifactId>