deps.ffmpeg: Switch Windows builds to native build toolchain #97

Job	Run time
Run Pre-Checks	4s
Build Qt6 (macOS)	9m 35s
Build FFmpeg for Windows (x64)	52m 6s
Build FFmpeg for Windows (x86)	44m 20s
Build macOS Dependencies (macos-arm64)	5m 13s
Build macOS Dependencies (macos-x86_64)	5m 35s
Build FFmpeg for macOS (macos-arm64)	21m 11s
Build FFmpeg for macOS (macos-x86_64)	28m 12s
Build Windows Dependencies (x64)	3m 20s
Build Windows Dependencies (x86)	2m 45s
Build Qt6 (Windows) (x64, RelWithDebInfo)	5m 17s
Build Qt6 (Windows) (x64, Debug)	5m 39s
Build Qt6 (Windows) (x86, RelWithDebInfo)	5m 4s
Build Qt6 (Windows) (x86, Debug)	5m 11s
Package Windows Qt6	0s
Create macOS Qt6 (macos-arm64)	4m 22s
Create macOS Qt6 (macos-x86_64)	3m 47s
Build macOS Dependencies (Universal)	2m 9s
Build FFmpeg (Universal)	3m 17s
Create and upload release	0s
	3h 27m 7s

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