Fix binning on empty reduced logs

[CodyCBakerPhD]

Since the reduced logs can be empty to signify the raw logs for that date were processed

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 64.34%. Comparing base (b7d35b3) to head (7814ba4).
Report is 2 commits behind head on main.

Files	Patch %	Lines
...g_parser/_bin_all_reduced_s3_logs_by_object_key.py	83.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #55      +/-   ##
==========================================
- Coverage   65.13%   64.34%   -0.79%     
==========================================
  Files          13       14       +1     
  Lines         499      561      +62     
==========================================
+ Hits          325      361      +36     
- Misses        174      200      +26     

Flag	Coverage Δ
unittests	64.34% <83.33%> (-0.79%)	⬇️

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Files	Coverage Δ
...g_parser/_bin_all_reduced_s3_logs_by_object_key.py	84.44% <83.33%> (ø)