CI: Force-remove pkg-config on macOS runners and install pkgconf #438

Job	Run time
Run Pre-Checks	5s
Run Pre-Checks	5s
Build Qt6 (macOS)	33m 48s
Build Qt6 (macOS)	33m 48s
Build FFmpeg for Windows (x64)	3m 9s
Build FFmpeg for Windows (x64)	3m 9s
Build FFmpeg for macOS (macos-arm64)	1m 0s
Build FFmpeg for macOS (macos-arm64)	13m 38s
Build macOS Dependencies (macos-arm64)	5m 40s
Build macOS Dependencies (macos-arm64)	5m 40s
Build Windows Dependencies (x64)	2m 31s
Build Windows Dependencies (x64)	2m 31s
Build FFmpeg for macOS (macos-x86_64)	1m 13s
Build FFmpeg for macOS (macos-x86_64)	14m 12s
Build macOS Dependencies (macos-x86_64)	5m 22s
Build macOS Dependencies (macos-x86_64)	5m 22s
Build Qt6 (Windows) (x64, RelWithDebInfo)	2m 11s
Build Qt6 (Windows) (x64, RelWithDebInfo)	2m 11s
Build Windows Dependencies (x86)	21s
Build Windows Dependencies (x86)	21s
Build Qt6 (Windows) (x64, Debug)	2m 19s
Build Qt6 (Windows) (x64, Debug)	2m 19s
Build FFmpeg (Universal)	0s
Build FFmpeg (Universal)	6s
Package Windows Qt6 (x64)	10s
Package Windows Qt6 (x64)	10s
Build macOS Dependencies (Universal)	5s
Build macOS Dependencies (Universal)	5s
Create macOS Qt6 (macos-arm64)	3s
Create macOS Qt6 (macos-arm64)	3s
Create macOS Qt6 (macos-x86_64)	3s
Create macOS Qt6 (macos-x86_64)	3s
Create and upload release	0s
Create and upload release	0s
	2h 21m 43s

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