An automatic bot has increased servlet apis version to 4.0.1

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <type>jar</type>
      <scope>provided</scope>
    </dependency>

Jetty 9.x used by App Engine is only at level 3.1 for servlets...
This should be fixed and the bot configured to not do the update for this artifact.