Validate all Azure examples/modules for compatibility with azurerm 4.0

[alexott]

trafficstars

I.e., this could affect us:

• https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/guides/4.0-upgrade-guide#specifying-subscription-id-is-now-mandatory
• https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/guides/4.0-upgrade-guide#azurerm_databricks_workspace_customer_managed_key
• https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/guides/4.0-upgrade-guide#azurerm_databricks_workspace