[MISC] set version to stable release

[eseiler]

No description provided.

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[codecov]

Codecov Report

Merging #2681 (c480dce) into release-3.0.3 (85d0057) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           release-3.0.3    #2681   +/-   ##
==============================================
  Coverage          98.23%   98.23%           
==============================================
  Files                276      276           
  Lines              10885    10885           
==============================================
  Hits               10693    10693           
  Misses               192      192           

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