Replace threading.Lock with asyncio.Lock when batching to avoid deadlocks

[tsmith023]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 86.84211% with 5 lines in your changes missing coverage. Please review.

Project coverage is 94.36%. Comparing base (624e2e2) to head (7a98f55).
Report is 37 commits behind head on main.

Files with missing lines	Patch %	Lines
weaviate/collections/classes/batch.py	82.35%	3 Missing ⚠️
weaviate/collections/batch/base.py	90.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1270      +/-   ##
==========================================
- Coverage   94.38%   94.36%   -0.02%     
==========================================
  Files         220      220              
  Lines       20953    20972      +19     
==========================================
+ Hits        19776    19791      +15     
- Misses       1177     1181       +4     

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