chore: Update dependency SixLabors.ImageSharp to 3.1.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
SixLabors.ImageSharp	3.1.5 -> 3.1.6

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Release Notes

SixLabors/ImageSharp (SixLabors.ImageSharp)

v3.1.6

What's Changed

• Mono AOT decoder workaround for slow jpeg decoding. by @​JimBobSquarePants in https://github.com/SixLabors/ImageSharp/pull/2762
• V3 - Correctly handle transform spaces when building transform matrices. by @​JimBobSquarePants in https://github.com/SixLabors/ImageSharp/pull/2791
• Backport : V3 Fix #​2779 buffer overrun by @​JimBobSquarePants in https://github.com/SixLabors/ImageSharp/pull/2824
• Backport - v3 WEBP : Use Correct Width With AlphaDecoder by @​JimBobSquarePants in https://github.com/SixLabors/ImageSharp/pull/2827
• Rewrite ChunkedMemoryStream by @​JimBobSquarePants in https://github.com/SixLabors/ImageSharp/pull/2828

Full Changelog: SixLabors/ImageSharp@v3.1.5...v3.1.6

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