Docker Image used by SWA Github Actions not picking latest Oryx, causing builds to fail for latest global.json SDK

**Describe the bug**

Our repository contains the following `global.json`:

```json
{
"sdk": {
"version": "8.0.422",
"rollForward": "latestPatch"
}
}
```

During deployment, Oryx detected the application and dynamically installed .NET SDK **8.0.420** instead of the SDK requested by `global.json` (**8.0.422**).

The subsequent build failed because the .NET SDK resolver correctly requires 8.0.422 (or a later patch in the same feature band) and cannot roll back to 8.0.420.

---Oryx build logs---

Oryx Version: 0.2.20260109.4+7d54dd5970dbbf3ae6bdcf4dee57b07816a392ce, Commit: 7d54dd5970dbbf3ae6bdcf4dee57b07816a392ce, ReleaseTagName: 20260109.4

The docker image used by the SWA GitHub actions is not picking up the latest Orxy version

A clarification has also been sought from https://github.com/microsoft/Oryx/issues/3017 to understand if the issue is to be addressed at SWA GitHub actions or the Oryx release cycle.

**To Reproduce**
Steps to reproduce the behavior:
1. Create a .NET 8 application.
2. Add the following `global.json`:

```json
{
"sdk": {
"version": "8.0.422",
"rollForward": "latestPatch"
}
}
```

3. Deploy the application to Azure Static Web Apps using the `Azure/static-web-apps-deploy` GitHub Action.
4. Perform the deployment before Oryx has been updated to include the requested SDK version.
5. Observe that Oryx installs .NET SDK **8.0.420**, after which the build fails because `global.json` requires **8.0.422**.

**Expected behavior**
Ideally one of the following:

1. New GA .NET SDKs once become available in Oryx should also be picked up by the docker image used by the SWA GitHub actions so that repositories can adopt the latest SDK without deployment failures.

The current behavior forces developers to either delay SDK updates, pin to an older SDK, or wait until the updated Oryx image is deployed.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Device info (if applicable):**
- OS: Ubuntu 24.04.4 LTS
- Version: static-web-apps-deploy@1a947af9992250f3bc2e68ad0754c0b0c11566c9
- OS Type : bullseye
- Image Type : githubactions

**Additional context**
* SDK update appears to already exist in Oryx PR [#2933](https://github.com/microsoft/Oryx/pull/2933), but it is not yet available in the Oryx version used by Azure Static Web Apps.

```
Operation performed by Microsoft Oryx, https://github.com/Microsoft/Oryx
You can report issues at https://github.com/Microsoft/Oryx/issues

Oryx Version: 0.2.20260109.4+7d54dd5970dbbf3ae6bdcf4dee57b07816a392ce, Commit: 7d54dd5970dbbf3ae6bdcf4dee57b07816a392ce, ReleaseTagName: 20260109.4

Build Operation ID: 656d1080a8dcbcf6
OS Type : bullseye
Image Type : githubactions

Primary SDK Storage URL: https://oryx-cdn.microsoft.io/
Backup SDK Storage URL:
Detecting platforms...
Detected following platforms:
dotnet: 8.0.26
Version '8.0.26' of platform 'dotnet' is not installed. Generating script to install it...
Detected the following frameworks: blazor

Source directory : /github/workspace/CareerWeb
Destination directory: /bin/staticsites/47f7c9f1-9f92-42a0-866d-7917613ceddb-swa-oryx/app

Installing platform...

Downloading and extracting 'dotnet' version '8.0.420' to '/tmp/oryx/platforms/dotnet/8.0.420'...
Detected image debian flavor: bullseye.
Binaries download done in 3 sec(s).
Verifying checksum...
Extracting contents...
performing sha512 checksum for: dotnet...
Checksum verification done in 1 sec(s).

Platform installation done in 8 sec(s).
Running build script snippets...

The command could not be loaded, possibly because:
* You intended to execute a .NET application:
The application '--version' does not exist.
* You intended to execute a .NET SDK command:
A compatible .NET SDK was not found.

Requested SDK version: 8.0.422
global.json file: /github/workspace/global.json

Installed SDKs:

Install the [8.0.422] .NET SDK or update [/github/workspace/global.json] to match an installed SDK.
```

Thank you for taking a look. I understand there may be operational reasons for the delay, but greater visibility into the release cadence—or more informative diagnostics when the requested SDK is unavailable—would significantly improve the developer experience.

Start with the static-web-apps-deploy@1a947af9992250f3bc2e68ad0754c0b0c11566c9 action version and trace which Docker image and Oryx release it uses. Review Oryx issue #3017 and PR #2933, then verify the deployment reproducer with global.json requesting .NET SDK 8.0.422. Done means the action uses an Oryx version containing the requested SDK and the build succeeds.

Written by the indexing model from the issue text.