update node/npm version

client/pom.xml

@@ -77,8 +77,8 @@
                 <artifactId>frontend-maven-plugin</artifactId>
                 <version>1.10.3</version>
                 <configuration>
-                    <nodeVersion>v12.13.1</nodeVersion>
-                    <npmVersion>6.13.4</npmVersion>
+                    <nodeVersion>v14.15.0</nodeVersion>
+                    <npmVersion>6.14.8</npmVersion>
                     <workingDirectory>angular/</workingDirectory>
                     <installDirectory>target/node-executable</installDirectory>
                 </configuration>