Update to azure/login@v2 (#8131)

* Update to azure/login@v2

* Remove the unnecessary setting of enable-AzPSSession. We don't need it.

.github/workflows/event-processor.yml

@@ -33,7 +33,7 @@ jobs:
     if: ${{ github.event_name == 'issues' && github.event.action == 'opened' }}
     steps:
       - name: 'Az CLI login'
-        uses: azure/login@v1
+        uses: azure/login@v2
         with:
             client-id: ${{ secrets.AZURE_CLIENT_ID }}
             tenant-id: ${{ secrets.AZURE_TENANT_ID }}