Merged PR 13213053: update sub name

update sub name

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#### AI description  (iteration 1)
#### PR Classification
This pull request is a configuration update that modifies the Azure subscription reference in a CI/CD pipeline.

#### PR Summary
This update changes the Azure subscription value in the pipeline configuration to ensure that the GitHub Actions task uses the correct credentials during execution.
- `.pipelines/DSC-Official.yml`: Replaced the `azureSubscription` value from `az-blob-cicd-infra` to `PowerShell-CICD-Feed-Access` in multiple Azure CLI tasks.
<!-- GitOpsUserAgent=GitOps.Apps.Server.pullrequestcopilot -->

Author: SteveL-PowerShell

.pipelines/DSC-Official.yml

@@ -83,7 +83,7 @@ extends:
         - task: AzureCLI@2
           displayName: Get Az Token
           inputs:
-            azureSubscription: az-blob-cicd-infra
+            azureSubscription: PowerShell-CICD-Feed-Access
             scriptType: pscore
             scriptLocation: inlineScript
             inlineScript: |
@@ -258,7 +258,7 @@ extends:
         - task: AzureCLI@2
           displayName: Azure CLI
           inputs:
-            azureSubscription: az-blob-cicd-infra
+            azureSubscription: PowerShell-CICD-Feed-Access
             scriptType: pscore
             scriptLocation: inlineScript
             inlineScript: |
@@ -317,7 +317,7 @@ extends:
         - task: AzureCLI@2
           displayName: Azure CLI
           inputs:
-            azureSubscription: az-blob-cicd-infra
+            azureSubscription: PowerShell-CICD-Feed-Access
             scriptType: pscore
             scriptLocation: inlineScript
             inlineScript: |