{AzureSecurityContacts} fixes Azure/azure-rest-api-specs#20364 (#20434)
{AzureSecurityContacts} fixes Azure/azure-rest-api-specs#20364 (#20434)

Currently, the azure python SDK supports version 2017-08-01-preview for security contacts. We need to update it to 2020-01-01-preview.

fixes Azure/azure-rest-api-specs#20364

This request is forwarded from Azure/azure-sdk-for-python#25771
solankisamir/azure-rest-api-specs,solankisamir/azure-rest-api-specs