Upgrade jetty 9.4.18.v20190429

Author: slandelle

pom.xml

@@ -436,7 +436,7 @@
  <rxjava2.version>2.2.9</rxjava2.version>
  <logback.version>1.2.3</logback.version>
  <testng.version>6.13.1</testng.version>
- <jetty.version>9.4.14.v20181114</jetty.version>
+ <jetty.version>9.4.18.v20190429</jetty.version>
  <tomcat.version>9.0.14</tomcat.version>
  <commons-io.version>2.6</commons-io.version>
  <commons-fileupload.version>1.3.3</commons-fileupload.version>