Validate in the pipeline that policy id is not equal to any built-in policies

[Joshua-Donovan]

#393

Updated Built-In Name / GUID validation check to use public resource that does not require us to maintain an authorization token like the Github APIs would require.

Also updated dependencies to the latest versions.

[Joshua-Donovan]

Previous recommendation from pull request #425 to use the csv export from azadvertizer would have required parsing the csv.

wouldn't it be possible to check the GUID against https://www.azadvertizer.net/azpolicyadvertizer-comma.csv for uniqueness. In this case we wouldn't need any permissions or access tokens. The csv file is updated daily against Azure (built-in), ALZ, AMBA and Community Policies.

I found it easier in bash to use jq to parse the json response from: https://www.azadvertizer.net/AzPolicyAdvertizerRuleThemAllData.json
instead of parsing the csv for this use case.