Fix failing CodeQL Analysis SARIF upload by disabling default CodeQL setup #128

Right now all CodeQL Analyze (Python) runs are failing on the SARIF upload. From reading the error message and the docs, I am guessing an repo admin should go to the Settings > Advanced Security and disable Default CodeQL.

Here's the error message:

Perform CodeQL Analysis
Code Scanning could not process the submitted SARIF file:
CodeQL analyses from advanced configurations cannot be processed when the default setup is enabled