Fix handling of DeviceCompliancePolicyScript property

[FabienTschanz]

Pull Request (PR) description

This PR fixes the handling of the DeviceCompliancePolicyScript property in the IntuneDeviceCompliancePolicyWindows10 resource. Previously, if this property was set, it would export a non-parseable string similar to System.Collections.Generic.Dictionary2[System.String,System.Object];`. This PR fixes this issue by exporting a CIM instance with the details of the property.

This Pull Request (PR) fixes the following issues

• Fixes BUG: IntuneDeviceCompliancePolicyWindows10: System.Collections.Generic.Dictionary #5510

Task list

• Added an entry to the change log under the Unreleased section of the file CHANGELOG.md.
  Entry should say what was changed and how that affects users (if applicable), and
  reference the issue being resolved (if applicable).
• Resource parameter descriptions added/updated in the schema.mof.
• Resource documentation added/updated in README.md.
• Resource settings.json file contains all required permissions.
• Examples appropriately added/updated.
• Unit tests added/updated.
• New/changed code adheres to DSC Community Style Guidelines.