CI: Avoid docker containers in favor of prebuilt binaries #703

Job	Run time
msrv	3m 35s
macOS - FFmpeg 4 - build, test and lint	1m 57s
Linux - FFmpeg 4.2 - build, test and lint	1m 27s
macOS - FFmpeg 5 - build, test and lint	1m 48s
macOS - FFmpeg 6 - build, test and lint	1m 55s
Windows - FFmpeg 4.4 - build, test and lint	1m 58s
macOS - FFmpeg 7 - build, test and lint	1m 47s
Windows - FFmpeg 5.0 - build, test and lint	2m 13s
Linux - FFmpeg 4.3 - build, test and lint	1m 31s
Windows - FFmpeg 5.1 - build, test and lint	3m 13s
Windows - FFmpeg 6.0 - build, test and lint	3m 2s
Linux - FFmpeg 4.4 - build, test and lint	1m 27s
Windows - FFmpeg 6.1 - build, test and lint	2m 57s
Linux - FFmpeg 5.1 - build, test and lint	1m 27s
Linux - FFmpeg 6.1 - build, test and lint	1m 26s
Windows - FFmpeg 7.0 - build, test and lint	2m 58s
Linux - FFmpeg 7.0 - build, test and lint	3m 20s
Windows - FFmpeg 7.1 - build, test and lint	2m 58s
Linux - FFmpeg 7.1 - build, test and lint	1m 31s
	42m 30s

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