Fix version definition in setuptools

[zhiqwang]

No description provided.

[codecov]

Codecov Report

Merging #328 (9749382) into main (a54a0dd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #328   +/-   ##
=======================================
  Coverage   95.38%   95.38%           
=======================================
  Files          11       11           
  Lines         759      759           
=======================================
  Hits          724      724           
  Misses         35       35           

Flag	Coverage Δ
unittests	95.38% <ø> (ø)

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