Magick.NET 7.20.0.0

Changes in Magick.NET:

• Changed the AreaThreshold property into a threshold and added all the other threshold to the ConnectedComponentsSettings.
• Added Avif to MagickFormat.

Related changes in ImageMagick since the last release of Magick.NET:

• Added support for 32 bit zip with prediction format to the PSD decoder (reference ImageMagick/ImageMagick#455).
• Fix incorrect parsing of font family list (reference ImageMagick/ImageMagick#2153).

Library updates:

• Magick.NET.Core 3.0.0
• Magick.NET.SystemDrawing 2.0.1
• Magick.NET.SystemWindowsMedia 1.0.2
• aom 2.0.0
• croco 0.6.13
• exr 2.5.1
• glib 2.64.3
• ImageMagick 7.0.10-21 beta
• jp2 2.0.16
• jpeg 2.0.4
• lcms 2.11
• libde265 1.0.5
• libheif 1.7.0