Improve test_valid_complex_string_with_space() xfail condition

[mgorny]

Change Summary

Improve the xfail condition for test_valid_complex_string_with_space() to use PyPy version rather than Python version. This corresponds to the fact that the issue was fixed in 7.3.17 releases. The other condition works only because PyPy3.9 is no longer being developed, and therefore did not get a 7.3.17 release.

Related issue number

This improves #1439, as discussed in comments.

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.29%. Comparing base (ab503cb) to head (c295fb2).
Report is 170 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1441      +/-   ##
==========================================
- Coverage   90.21%   89.29%   -0.93%     
==========================================
  Files         106      112       +6     
  Lines       16339    17724    +1385     
  Branches       36       41       +5     
==========================================
+ Hits        14740    15826    +1086     
- Misses       1592     1878     +286     
- Partials        7       20      +13     

see 49 files with indirect coverage changes

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[codspeed-hq]

CodSpeed Performance Report

Merging #1441 will not alter performance

_{Comparing mgorny:pypy-xfail (c295fb2) with main (dec5faa)}

Summary

✅ 155 untouched benchmarks

[mgorny]

Thanks!