Upgrade StableHashTraits

[haberdashPI]

Description

This bumps StableHashTraits to 1.1 and uses stable_hash(x; version=2), which speeds up hashing by a factor of up to 100 compared to stable_hash(x; verison=1) in the benchmarks I've looked at.

Type of change

Delete options that do not apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• Added an entry in NEWS.md (for new features and breaking changes)
• Added or changed relevant sections in the documentation
• Added unit tests for new algorithms, conversion methods, etc.
• Added reference image tests for new plotting functions, recipes, visual options, etc.

[SimonDanisch]

Nice!! :) Happy to hear that... I did a few benchmarks recently and it did show that this actually was a major performance bottleneck for certain kind of plots!