Add security severity

Author: joefarebrother

java/ql/src/Security/CWE/CWE-287/AndroidInsecureLocalAuthentication.ql

@@ -3,7 +3,7 @@
  * @description Local authentication that does not make use of a `CryptoObject` can be bypassed.
  * @kind problem
  * @problem.severity warning
- * @security-severity ...TODO
+ * @security-severity 9.3
  * @precision high
  * @id java/android/insecure-local-authentication
  * @tags security