Update dependency vapoursynth/bestsource to v22

[renovate]

This PR contains the following updates:

Package	Update	Change
vapoursynth/bestsource	major	R20 → R22

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Release Notes

vapoursynth/bestsource (vapoursynth/bestsource)

vR22

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COMPLETELY REWORKED GPU SUPPORT
NOT SOURCE COMPATIBLE WITH R21!!!!!!

• Now GPU frames can be natively output
• Vulkan only GPU support
• Many memory usage adjustments

vR21

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• Fix 8 bit audio output
• Enable cuda hwaccel in linux builds
• Enable lcms2 in avs+ windows builds
• Builds are compiled with FFmpeg 9.0 branch
• Fix return type declaration
• Properly error on avs+ unsupported formats

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