Try to build newer ffmpeg #47

Job	Run time
build (mac-intel, macos-13, macos-conan-ninja-release, macos-intel, --options with_apple_system_l...	3m 25s
build (mac-arm, macos-13, macos-arm-conan-ninja-release, macos-arm, --options with_apple_system_l...	3m 2s
build (ios, macos-13, ios-release-conan-ccache, ios-arm64, --options with_apple_system_libs=True)	2m 38s
build (mingw, ubuntu-22.04, windows-mingw-conan-linux, mingw64-linux.jinja)	2m 19s
build (mingw-32, ubuntu-22.04, windows-mingw-conan-linux, mingw32-linux.jinja)	2m 20s
build (android-32, macos-14, android-conan-ninja-release, android-32-ndk, --conf tools.android:nd...	1m 37s
build (android-64, macos-14, android-conan-ninja-release, android-64-ndk, --conf tools.android:nd...	1m 57s
	17m 18s

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