fix: Update Azure login step to use OIDC and add necessary secrets

Author: ianlintner

.github/workflows/ci.yml

@@ -66,7 +66,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: tests
     permissions:
-      contents: 'read'
+      contents: read
+      id-token: write
     env:
       ACR_NAME: gabby
       REGISTRY: gabby.azurecr.io
@@ -76,10 +77,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Azure Login
+      - name: Azure Login (OIDC)
         uses: azure/login@v2
         with:
-          creds: '{}'
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
 
       - name: Login to Azure Container Registry
         run: az acr login --name $ACR_NAME