Bump image from 0.21.2 to 0.22.1

[dependabot-preview]

Bumps image from 0.21.2 to 0.22.1.

Changelog

Sourced from image's changelog.

Rust Image Release Notes

Rust image aims to be a pure-Rust implementation of various popular image formats. Accompanying reading/write support, rust image provides basic imaging processing function. See README.md for further details.

Known issues

• Interlaced (progressive) or animated images are not well supported.
• Images with n bit/channel (n ≠ 8) are not well supported.

Changes

Version 0.22

• The required Rust version is now 1.34.2.
• Note the website and blog: image-rs.org and blog.image-rs.org
• PixelMut now only on ImageBuffer and removed from GenericImage
  interface. Prefer iterating manually in the generic case.
• Replaced an unsafe interface in the hdr decoder with a safe variant.
• Support loading 2-bit BMP images
• Add method to save an ImageBuffer/DynamicImage with specified format
• Update tiff to 0.3 with a writer
• Update png to 0.15, fixes reading of interlaced sub-byte pixels
• Always use custom struct for ImageDecoder::Reader
• Added apply_without_alpha and map_without_alpha to Pixel trait
• Pixel information now with associated constants instead of static methods
• Changed color structs to tuple types with single component. Improves
  ergonomics of destructuring assignment and construction.
• Add lifetime parameter on ImageDecoder trait.
• Remove unecessary 'static bounds on affine operations
• Add function to retrieve image dimensions without loading full image
• Allow different image types in overlay and replace
• Iterators over rows of ImageBuffer, mutable variants

Commits

• bf93ebb Merge pull request #998 from bvssvni/nof
• 94c4692 Added CI test for no default features
• 674ec50 Fixed broken build with no default features
• a4cf9b5 Merge pull request #996 from HeroicKatora/style-fix
• 1b8e277 Fix future deprecated items
• 7814e26 Replace most try! macro by try syntax
• 9fc1f01 Merge pull request #973 from HeroicKatora/master
• 95e61e4 Add some missing parts to the changelog
• 0b43c30 Merge pull request #990 from HeroicKatora/update-png
• 9876c55 Update png to newly release 0.15
• Additional commits viewable in compare view

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