Upgrade tomcat 9.0.20

Author: slandelle

pom.xml

@@ -437,7 +437,7 @@
     <logback.version>1.2.3</logback.version>
     <testng.version>6.13.1</testng.version>
     <jetty.version>9.4.18.v20190429</jetty.version>
-    <tomcat.version>9.0.14</tomcat.version>
+    <tomcat.version>9.0.20</tomcat.version>
     <commons-io.version>2.6</commons-io.version>
     <commons-fileupload.version>1.3.3</commons-fileupload.version>
     <privilegedaccessor.version>1.2.2</privilegedaccessor.version>