Bump color_quant from 1.1.0 to 2.0.0

[dependabot]

Bumps color_quant from 1.1.0 to 2.0.0.

Changelog

Sourced from color_quant's changelog.

2.0.0

• Add no_std support using core and alloc only, and raise the MSRV from Rust 1.34.2 to 1.36.0 (image-rs/color_quant#24)
• Add NeuQuant::color_map_alpha for retrieving the palette alpha channel, useful for PNG tRNS chunks (image-rs/color_quant#23)
• Fix search_netindex so palette index 0 is checked and both search directions are handled correctly (image-rs/color_quant#16)
• Fix a sampling prime typo by changing 478 to 487 (image-rs/color_quant#14)
• Forbid unsafe code in the crate (image-rs/color_quant#22)
• Improve and specialize internal math operations used by the quantizer, and document their provenance (image-rs/color_quant#24)

Commits

• See full diff in compare view

[spenserblack]

Perhaps we should group image and color_quant in the dependabot config.

[spenserblack]

I don't think this should be bumped unless image is also bumped, since image will still bring in color_quant 1.1.0.

[o2sh]

Perhaps we should group image and color_quant in the dependabot config.

makes sense, done in #1750

[o2sh]

@dependabot recreate

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.