Provision-server-roles-sqlserver fails with MissingMethodException for MemoryCache..ctor

## Description

`aspire deploy` fails at the `provision-server-roles-sqlserver` step with a `MissingMethodException` inside the Azure Deployment Script container. The SQL role was provisioned successfully on the first deploy and persists, so the app works — but every subsequent deploy fails at this step.

## Error

Error code = DeploymentScriptError
System.MissingMethodException: Method not found:
'Void Microsoft.Extensions.Caching.Memory.MemoryCache..ctor(
Microsoft.Extensions.Options.IOptions`1)'

at Microsoft.SqlServer.Management.AlwaysEncrypted.Management.SqlAKVProviderWithDisposableCache..ctor(TokenCredential tokenCredential)
at Microsoft.SqlServer.Management.AlwaysEncrypted.Management.AlwaysEncryptedManagement.SetCustomProvidersWithDisposableCache(Boolean useGlobalCredential)
at Microsoft.SqlServer.Management.PowerShell.Shared.AzureKeyVaultUtilities.RegisterCustomKeyStoreProviders(...)
at Microsoft.SqlServer.Management.PowerShell.GetScriptCommand.ProcessRecord()
at , /mnt/azscripts/azscriptinput/userscript.ps1: line 41

## Root Cause

The Azure Deployment Script container used for SQL role provisioning has a version conflict between the **SqlServer PowerShell module** and **Microsoft.Extensions.Caching.Memory**. The `MemoryCache` constructor signature the SqlServer module expects no longer exists in the version of `Microsoft.Extensions.Caching.Memory` loaded in the container.

## Reproduction

1. Create an Aspire app with `AddAzureSqlServer` and a project referencing the SQL database
2. Run `aspire deploy` — first deploy succeeds
3. Run `aspire deploy` again — `provision-server-roles-sqlserver` fails every time

## Environment

- Aspire CLI: latest (via `dotnet tool install -g aspire.cli`)
- Aspire SDK: 13.4.6
- .NET SDK: 10.0
- OS: Ubuntu (GitHub Actions runner)

## Workaround

We use `continue-on-error: true` on the deploy step and fall back to `az containerapp update` to manually point the container app at the latest ACR image.

Start by reproducing the repeated `aspire deploy` failure and inspect the Azure Deployment Script container, including the SqlServer PowerShell module and Microsoft.Extensions.Caching.Memory versions used around `/mnt/azscripts/azscriptinput/userscript.ps1:41`. Done means subsequent deploys complete the `provision-server-roles-sqlserver` step without the MissingMethodException.

Written by the indexing model from the issue text.