tests

Build our wheels against FFmpeg 6.0 #941

Job	Run time
py-3.8 lib-6.0 windows-latest	1m 50s
py-3.8 lib-5.1 windows-latest	2m 9s
package-source	35s
py-3.8 lib-6.0 ubuntu-latest	5m 39s
py-3.8 lib-5.0 windows-latest	2m 25s
py-3.8 lib-5.1 ubuntu-latest	5m 42s
py-3.8 lib-5.0 ubuntu-latest	5m 42s
package-wheel (macos-latest, arm64)	5m 38s
style	24s
py-pypy3.9 lib-5.0 ubuntu-latest	5m 40s
package-wheel (macos-latest, x86_64)	5m 39s
py-3.8 lib-5.0 macos-latest	5m 41s
package-wheel (ubuntu-latest, aarch64)	5m 8s
package-wheel (ubuntu-latest, i686)	5m 36s
package-wheel (ubuntu-latest, x86_64)	5m 43s
package-wheel (windows-latest, AMD64)	5m 28s
publish	1s
	1h 9m 0s

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