Update gif requirement from 0.12.0 to 0.13.1

[dependabot[bot]]

Updates the requirements on gif to permit the latest version.

Changelog

Sourced from gif's changelog.

v0.13.1

Bugfixes:

• Fixed writing palettes with non-power-of-two sizes

v0.13.0

Features:

• Added Iterator interface for the Decoder
• Added reading number of loop repetitions Decoder::repeat.
• Added skip_frame_decoding option to read Frame.buffer as LZW data. It works together with write_lzw_pre_encoded_frame for quick rewriting of GIF files.
• Added support pre-allocated Vecs in from_palette_pixels
• Added ability to recover the io::Reader after decoding.
• Added support for decompressing Frame.buffer with LZW data, which enables fully parallel GIF re-encoding (see examples/parallel.rs),

Optimization:

• Less buffering, copying, and lower peak memory usage.

Other changes:

• Removed unsafe {} code.
• Enforced memory limit also on metadata extension blocks, and added out-of-memory checks where possible.
• EncodingFormatError enum is public.
• Removed defunct skip_extensions
• Added validation of frame dimensions. The buffer must be large enough for all pixels, and if the width or height is 0, the buffer must be empty.

v0.12.0

Features:

• Add compression of pre-compressed frame data, via Encoder::write_lzw_pre_encoded_frame.
• The color_quant dependency is now optional. Turning it off disables some interfaces that would internally build quantization tables. The generic implementation of creating such tables can be prohibitively costly compared to specialized algorithms in some use cases.

Optimization:

• Avoid some allocations in by replacing flat_map argument with arrays

v0.11.4

Bufixes:

• Fix decoding confusing superfluous image data from previous frames with current frame data.
• Bump minimum required version of weezl.

Features:

• Add Encoder::{get_ref, get_mut, into_inner} to access underlying stream.

... (truncated)

Commits

• 70a1d31 Bump
• 3bf238d Fix writing palettes with non-power-of-two sizes
• 965be5b Unused when color_quant is off
• 9f740e0 Release 0.13.0 (#186)
• 4645e55 Future-proof ExtensionData
• 4262f07 Test comment parsing
• 0d71f7f Stop iterator on error
• b4d2fd3 Test truncated files
• a0700f4 Fix skipping of extra LZW data
• 27ea2f4 Compute min code size
• Additional commits viewable in compare view

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