Update app-service-web-get-started-java.md

Author: Elvira-sxr

articles/app-service/app-service-web-get-started-java.md

@@ -55,7 +55,7 @@ Then add the following plugin definition inside the `<build>` element of the `po
     <plugin>
         <groupId>com.microsoft.azure</groupId>
         <artifactId>azure-webapp-maven-plugin</artifactId>
-        <version>1.8.0</version>
+        <version>1.9.0</version>
         <configuration>
             <!-- Specify v2 schema -->
             <schemaVersion>v2</schemaVersion>