feat(misconf): Update SecurityCenter schema

[yagreut]

Update SecurityCenter schema

Add Email and EnableAlertsToAdmins

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[github-actions]

📊 API Changes Detected

Semver impact: major

github.com/aquasecurity/trivy/pkg/iac/providers/azure/securitycenter
  Compatible changes:
  - Contact.Email: added
  - Contact.EnableAlertsToAdmins: added
  - Contact.IsEnabled: added
  - Contact.MinimalSeverity: added

github.com/aquasecurity/trivy/pkg/iac/providers/azure/compute
  Incompatible changes:
  - LinuxVirtualMachine: old is comparable, new is not
  - VirtualMachine: old is comparable, new is not
  - WindowsVirtualMachine: old is comparable, new is not
  Compatible changes:
  - LinuxVirtualMachine.NetworkInterfaceIDs: added
  - VirtualMachine.NetworkInterfaceIDs: added
  - WindowsVirtualMachine.NetworkInterfaceIDs: added

[nikpivkin]

The alertNotifications field was last present in version 2020-01-01 as an object, then it was removed.

I glanced at the latest documentation, and it seems to me that now, instead of alertNotifications, notificationsSources is used with the following configuration to configure the alert level:

"notificationsSources": [
  {
    "sourceType": "Alert",
    "minimalSeverity": "High"
  }
]

You also need to consider the isEnabled field, which indicates whether the security contact is enabled.