Change precision to high.

Author: taus-semmle

python/ql/src/Security/CWE-215/FlaskDebug.ql

@@ -3,7 +3,7 @@
  * @description Running a Flask app in debug mode may allow an attacker to run arbitrary code through the Werkzeug debugger.
  * @kind problem
  * @problem.severity error
- * @precision medium
+ * @precision high
  * @id py/flask-debug
  * @tags security
  *       external/cwe/cwe-215