[Service Bus] update README with install steps for azure-identity/aiohttp#16273

swathipil merged 1 commit intoAzure:masterAzure/azure-sdk-for-python:masterfrom

swathipil:swathipil/sb/docs/update-readmeswathipil/azure-sdk-for-python:swathipil/sb/docs/update-readmeCopy head branch name to clipboard