fix generate checkpoint

[Borda]

What does this PR do?

the installation fails for the presence of multiple packages of the same version as we generate the for upload to PyPI
it is p1 till need it for release but we have a week, then it becomes p0
see: https://github.com/PyTorchLightning/pytorch-lightning/runs/1690836716?check_suite_focus=true#step:15:39

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[codecov]

Codecov Report

Merging #5489 (347aa94) into master (652df18) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #5489   +/-   ##
======================================
  Coverage      93%     93%           
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  Files         135     135           
  Lines       10015   10015           
======================================
  Hits         9338    9338           
  Misses        677     677