Merge pull request #517 from graphql-java-kickstart/renovate/javax.servlet-javax.servlet-api-4.x

Update dependency javax.servlet:javax.servlet-api to v4

Author: oryan-block

pom.xml

@@ -187,7 +187,7 @@
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
-            <version>3.1.0</version>
+            <version>4.0.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>