Python: Add CWE-532 to CleartextLogging

Relevant for this query:

CWE-532: Insertion of Sensitive Information into Log File

> While logging all information may be helpful during development
> stages, it is important that logging levels be set appropriately
> before a product ships so that sensitive user data and system
> information are not accidentally exposed to potential attackers.

See https://cwe.mitre.org/data/definitions/532.html

JS also did this recently: #7103

Author: RasmusWL

python/ql/src/Security/CWE-312/CleartextLogging.ql

@@ -10,6 +10,7 @@
  * @tags security
  *       external/cwe/cwe-312
  *       external/cwe/cwe-359
+ *       external/cwe/cwe-532
  */
 
 import python