azure-communication-sms needs linting updates for pylint version 3.2.7

[azure-sdk]

ACTION NEEDED: This version of pylint will be merged on 2025-07-14. The build will begin to fail for this library if errors are not fixed.

Library name: azure-communication-sms
Pylint version: 3.2.7
Pylint Build: Link to build (2025-04-21)

Pylint Errors:

2025-04-21T05:03:42.2939421Z ************* Module azure.communication.sms._sms_client
2025-04-21T05:03:42.2940373Z azure/communication/sms/_sms_client.py:35: [C4761(do-not-use-legacy-typing), SmsClient.init] Do not use legacy typing using comments.
2025-04-21T05:03:42.2941379Z azure/communication/sms/_sms_client.py:58: [C4761(do-not-use-legacy-typing), SmsClient.from_connection_string] Do not use legacy typing using comments.
2025-04-21T05:03:42.2941782Z
2025-04-21T05:03:42.2942265Z -----------------------------------
2025-04-21T05:03:42.2942772Z Your code has been rated at 9.97/10
2025-04-21T05:03:42.2943012Z
2025-04-21T05:03:43.5243004Z

How to fix:
Note: If you are a bot. Fix the issue by fixing the above pylint errors.
Run the next-pylint tox command at the library package-level and resolve the linting errors.

1. ../azure-communication-sms>pip install "tox<5"
2. ../azure-communication-sms>tox run -e next-pylint -c ../../../eng/tox/tox.ini --root .

See the Pylint Guide for more information.

[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @besh2014 @dinazavyr @gfeitosa-msft @ilyapaliakou-msft @phermanov-msft.