Fix Lock crash, and versioning 4.3.3

[dvora-h]

Pull Request check-list

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Description of change

fixes #2209

[codecov-commenter]

Codecov Report

Merging #2210 (be0e4e8) into master (a2365d1) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2210      +/-   ##
==========================================
- Coverage   91.84%   91.83%   -0.02%     
==========================================
  Files         108      108              
  Lines       27691    27691              
==========================================
- Hits        25433    25429       -4     
- Misses       2258     2262       +4     

Impacted Files	Coverage Δ
redis/lock.py	100.00% <ø> (ø)
setup.py	0.00% <ø> (ø)
tests/test_asyncio/test_search.py	98.35% <0.00%> (-0.33%)	⬇️
tests/test_cluster.py	96.91% <0.00%> (-0.12%)	⬇️

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