Elkm1

- Time to take this out of beta! The code has been stable for well over a year.
- Added support for TLS 1.2 secure connection mode. This is required for M1XEP
version 2.0.46 and higher

- Add get_voltage on zone.

- Fix panel not recognized when using auto-configure.

- Fix https://github.com/home-assistant/core/issues/20630

- Many small non-functional code cleanups.

- Lint and isort cleanup
- Move from .format to f-string for string formatting