CI: Fix missing arm64 configuration for scheduled Windows FFmpeg builds #452

Job	Run time
Run Pre-Checks	5s
Build Qt6 (macOS)	6m 32s
Build FFmpeg for Windows (x64)	35m 28s
Build FFmpeg for Windows (arm64)	29m 39s
Build FFmpeg for macOS (macos-arm64)	7m 42s
Build macOS Dependencies (macos-arm64)	6m 23s
Build FFmpeg for macOS (macos-x86_64)	2m 59s
Build Windows Dependencies (x64)	4m 16s
Build macOS Dependencies (macos-x86_64)	6m 30s
Build Windows Dependencies (x86)	1m 9s
Build Qt6 (Windows) (x64, RelWithDebInfo)	2m 31s
Build Windows Dependencies (arm64)	7m 20s
Build Qt6 (Windows) (x64, Debug)	2m 46s
Build Qt6 (Windows ARM64) (RelWithDebInfo)	2m 18s
Build Qt6 (Windows ARM64) (Debug)	2m 39s
Package Windows Qt6 (x64)	1m 41s
Package Windows Qt6 (arm64)	1m 51s
Build macOS Dependencies (Universal)	1m 15s
Create macOS Qt6 (macos-arm64)	2m 40s
Create macOS Qt6 (macos-x86_64)	3m 25s
Build FFmpeg (Universal)	2m 5s
Create and upload release	0s
	2h 11m 14s

Provide feedback