fix: Replace DefaultAzureCredential with ManagedIdentityCredential for production-safe authentication#1876

Prajwal-Microsoft merged 3 commits intomainAzure-Samples/chat-with-your-data-solution-accelerator:mainfrom

sfi-cred-changeAzure-Samples/chat-with-your-data-solution-accelerator:sfi-cred-changeCopy head branch name to clipboard