Use zigpy `SerialProtocol` #468

Job	Run time
shared-ci / Prepare base dependencies (3.9.15)	22s
shared-ci / Prepare base dependencies (3.10.8)	13s
shared-ci / Prepare base dependencies (3.11.0)	13s
shared-ci / Prepare base dependencies (3.12)	5s
shared-ci / Prepare base dependencies (3.13)	12s
shared-ci / Run pre-commit	32s
shared-ci / Run tests Python 3.9.15	1m 29s
shared-ci / Run tests Python 3.10.8	1m 35s
shared-ci / Run tests Python 3.11.0	1m 32s
shared-ci / Run tests Python 3.12	1m 30s
shared-ci / Run tests Python 3.13	1m 34s
shared-ci / Process test coverage	26s
	9m 43s

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