[MISC] Switch to ty for typechecking

[dragomirp]

Switch type checker to ty from pyright.

Checklist

• I have added or updated any relevant documentation.
• I have cleaned any remaining cloud resources from my accounts.

[codecov]

Codecov Report

❌ Patch coverage is 41.66667% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.89%. Comparing base (9429b74) to head (58e6eb8).
⚠️ Report is 1 commits behind head on 16/edge.

Files with missing lines	Patch %	Lines
single_kernel_postgresql/utils/postgresql.py	41.66%	7 Missing ⚠️

❌ Your project status has failed because the head coverage (50.89%) is below the target coverage (70.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           16/edge      #71      +/-   ##
===========================================
+ Coverage    50.78%   50.89%   +0.11%     
===========================================
  Files            4        4              
  Lines          892      894       +2     
  Branches       105      104       -1     
===========================================
+ Hits           453      455       +2     
- Misses         419      420       +1     
+ Partials        20       19       -1     

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[marceloneppel]

LGTM! I hope ty doesn't break anything until its 1.0.0 release.