Add support for UUIDv6 and UUIDv8 validation

[astei]

Change Summary

Adds support for validating v6 and v8 UUIDs. UUID version 6 and 8 defined in RFC 9562.

Upon request from from @Viicos on pydantic/pydantic#11436, creating this PR to wire up UUID v6 and v8 validation support.

Related issue number

n/a

Checklist

• Unit tests for the changes exist
• Documentation reflects the changes where applicable
• Pydantic tests pass with this pydantic-core (except for expected changes)
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

Selected Reviewer: @sydney-runkle

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.55%. Comparing base (ab503cb) to head (7b2e241).
Report is 292 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1636      +/-   ##
==========================================
- Coverage   90.21%   89.55%   -0.67%     
==========================================
  Files         106      115       +9     
  Lines       16339    17920    +1581     
  Branches       36       25      -11     
==========================================
+ Hits        14740    16048    +1308     
- Misses       1592     1853     +261     
- Partials        7       19      +12     

Files with missing lines	Coverage Δ
python/pydantic_core/core_schema.py	95.08% <ø> (+0.31%)	⬆️
src/validators/uuid.rs	98.64% <100.00%> (+0.05%)	⬆️

... and 64 files with indirect coverage changes

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[codspeed-hq]

CodSpeed Performance Report

Merging #1636 will not alter performance

_{Comparing astei:astei/add-uuidv6v8 (7b2e241) with main (741961c)}

Summary

✅ 157 untouched benchmarks

[astei]

please review

[Viicos]

Thanks @astei. Is it possible to also update this comment?

pydantic-core/src/validators/uuid.rs

Lines 138 to 147 in 741961c

	// This block checks if the UUID version matches the expected version and
	// if the UUID variant conforms to RFC 4122. When dealing with Python inputs,
	// UUIDs must adhere to RFC 4122 standards.
	if let Some(expected_version) = self.version {
	if uuid.get_version_num() != expected_version || uuid.get_variant() != Variant::RFC4122 {
	return Err(ValError::new(
	ErrorType::UuidVersion {
	expected_version,
	context: None,
	},

With something along the lines of:

This block checks if the UUID version matches the expected version and
if the UUID variant conforms to RFC 9562 (superseding RFC4122) . When dealing with Python inputs,
UUIDs must adhere to RFC 9562 standards.