Bump willow[heif] from 1.6.3 to 1.8.0 in /requirements

[dependabot]

Bumps willow[heif] from 1.6.3 to 1.8.0.

Release notes

Sourced from willow[heif]'s releases.

v1.8 - Better handling of CMYK images with ICC profile, and support for ICO

[!NOTE] This release converts CMYK images with an ICC profile to sRGB as CMYK is not supported by PNG, WEBP, AVIF and HEIC Pillow encoders.

The issue stems from the fact that when a CMYK image is encoded, it gets converted to RGB, thus resulting in inaccurate colors because Pillow ignores the ICC profile during the conversion. So, we manually force an accurate conversion to RGB before encoding the image. This results in a much more accurate representation of the original CMYK image.

What's Changed

• Fix sphinx build errors by @​zerolab in wagtail/Willow#140
• Remove old imghdr patch test by @​Stormheg in wagtail/Willow#143
• test_detect_faces: sort array for determinism by @​stephanlachnit in wagtail/Willow#135
• Add transform_colorspace_to_srgb operation and use it to fix inaccurate colors when saving specific image files by @​Stormheg in wagtail/Willow#142
• Add support for ICO images by @​RealOrangeOne in wagtail/Willow#141

New Contributors

• @​Stormheg made their first contribution in wagtail/Willow#143

Full Changelog: wagtail/Willow@v1.7.0...v1.8.0

Changelog

Sourced from willow[heif]'s changelog.

1.8.0 (2024-01-17)

• Fix sphinx build errors

• Remove old imghdr patch test (Storm Heg)

• Update the OpenCV detect_faces test for determinism (Stephan Lachnit)

• Add transform_colorspace_to_srgb operation and use it to fix inaccurate colors when saving specific image files (Storm Heg)

  Note: this forces conversion to sRGB for CMYK images with an ICC profile as CMYK is not supported by PNG, WEBP, AVIF and HEIC Pillow encoders. Otherwise, when a CMYK image is encoded, it gets converted to RGB resulting in inaccurate colors because Pillow ignores the ICC profile when performing the conversion. So, as a workaround, we manually force an accurate conversion to RGB before encoding the image. This results in a much more accurate representation of the original CMYK image.

• Add support for ICO images (Jake Howard)

1.7.0 (2023-11-26)

Note: due to various limitations, version 1.6.3 includes some of the fixes present in 1.7.x, most importantly the ICC profile and EXIF data when saving a JPEG to PNG, WebP, AVIF.

• Test with Python 3.12 (@​zerolab)
• Add optional dependencies for Pillow/Wand (@​zerolab) One can run pip install Willow[Pillow] or Willow[Wand] and get the correct Pillow or Wand versions.
• Replace wrong unicode character in the image/heic mime type (Stephan Lachnit)
• Fix color management by keeping ICC color profiles and EXIF data in addition (André Fuchs, Stefan Istrate)

Commits

• 94af7c4 Drop flit install from the publish task
• 452adf8 Bump version to 1.8.0
• 0932a93 Add documentation link for PyPI
• d4e28c0 Update CHANGELOG
• dc30528 Add support for ICO images (#141)
• 9565d94 Add transform_colorspace_to_srgb operation and use it to fix inaccurate col...
• 60d9ed3 test_detect_faces: sort array for determinism (#135)
• 6c72dc5 Remove old imghdr patch test (#143)
• a905f80 Fix sphinx build errors (#140)
• 0488441 Bump version to 1.7.0
• Additional commits viewable in compare view

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[dependabot]

Looks like willow[heif] is up-to-date now, so this is no longer needed.