feat(snowflake): add hexdigest function

[mesejo]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 90.00000% with 3 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...rq/vendor/ibis/backends/sql/compilers/snowflake.py	75.00%	3 Missing ⚠️

Flag	Coverage Δ
snowflake	47.84% <90.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
python/xorq/backends/let/tests/test_generic.py	99.60% <ø> (-0.01%)	⬇️
...thon/xorq/backends/snowflake/tests/test_generic.py	100.00% <100.00%> (ø)
...rq/vendor/ibis/backends/sql/compilers/snowflake.py	36.90% <75.00%> (+3.74%)	⬆️

... and 193 files with indirect coverage changes

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[codspeed-hq]

CodSpeed Performance Report

Merging #1374 will not alter performance

_{Comparing feat/add_hexdigest_snowflake (ee44b19) with main (6ee1225)}

Summary

✅ 4 untouched