This change migrates the frigate container build to use Debian trixie as the base image.
This permits us to use newer upstream packages (and, for example, stop needing to use a custom ffmpeg
build). The main hitch was the need for Python 3.9 for Pycoral from the Google apt repository, for
Coral Edge TPU support. Fortunately, the open source community has stepped up, and there are now
TFLite and Pycoral wheels available for Python 3.10-3.12 as well.
