Bump version to 0.51.1

[adriangb]

This release includes new features but no breaking changes. Since we are zero version we can introduce new features in a patch release and I've opted to do this to avoid being 1 version number off from DataFusion which can be confusing (many off is okay... 1 off is confusing).

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.28%. Comparing base (9c37683) to head (e4b8fd1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #104   +/-   ##
=======================================
  Coverage   85.28%   85.28%           
=======================================
  Files          17       17           
  Lines        1346     1346           
  Branches     1346     1346           
=======================================
  Hits         1148     1148           
  Misses        134      134           
  Partials       64       64           

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