Update version.py

[SchrodingersGat]

Bump version number to 0.17.3

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.58%. Comparing base (4b56492) to head (2742ba8).
Report is 65 commits behind head on 0.17.x.

Additional details and impacted files

@@            Coverage Diff             @@
##           0.17.x    #8859      +/-   ##
==========================================
- Coverage   84.61%   84.58%   -0.03%     
==========================================
  Files        1201     1201              
  Lines       54684    54684              
  Branches     2087     2087              
==========================================
- Hits        46270    46255      -15     
- Misses       7895     7922      +27     
+ Partials      519      507      -12     

Flag	Coverage Δ
backend	86.09% <100.00%> (-0.04%)	⬇️
pui	∅ <ø> (∅)

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