Java: Lower security-severity for Insecure Cookie query to 4.0

Author: Napalys

java/ql/src/Security/CWE/CWE-614/InsecureCookie.ql

@@ -4,7 +4,7 @@
  *              interception.
  * @kind problem
  * @problem.severity error
- * @security-severity 5.0
+ * @security-severity 4.0
  * @precision high
  * @id java/insecure-cookie
  * @tags security