Highlight C#, shell, PowerShell and HTTP code blocks - #2781

Login failed with Error: Using auth-type: SERVICE_PRINCIPAL. Not all values are present. Ensure 'client-id' and 'tenant-id' are supplied.. Double check if the 'auth-type' is correct. Refer to https://github.com/Azure/login#readme for more information.

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: azure/login@v2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/