v4.9.2

V4.9.2 (#482)

* Late-import base36 and QR code libraries; remove SUPPORT_QR_CODE flag

* Increase idle connection check interval to 300s (#475)

This check was creating a lot of TimerHandles when the user
had multiple bridges. We do not need to check very often
as connections usually stay around for 24+hours

* Implement zerocopy writes for the encrypted protocol (#476)

* Implement zerocopy writes for the encrypted protocol

With Python 3.12+ and later `transport.writelines` is implemented as [`sendmsg(..., IOV_MAX)`](https://github.com/python/cpython/issues/91166) which allows us to avoid joining the bytes and sending them in one go.

Older Python will effectively do the same thing we do now `b"".join(...)`

* update tests

* Revert "Late-import base36 and QR code libraries; remove SUPPORT_QR_CODE flag" (#477)

* Avoid os.chmod failing on Windows if file non-existant (#471)

* Avoid os.chmod failing on Windows if file non-existant

* Update accessory_driver.py

---------

Co-authored-by: Ivan Kalchev <[email protected]>

* Fix mdns tests (#478)

* Fix pylint complaints (#480)

* Address remaining pylint complaints (#481)

* Address remaining pylint complaints

* Address remaining pylint complaints

* v4.9.2

---------

Co-authored-by: Aarni Koskela <[email protected]>
Co-authored-by: J. Nick Koston <[email protected]>
Co-authored-by: Perry Kundert <[email protected]>
Co-authored-by: Ivan Kalchev <[email protected]>