Remove support for Python 3.7

[gordonhart]

Remove support for EOL Python 3.7 now that it is no longer supported by AWS SDKs. 3.7 has been officially deprecated since June 2023.

Fixes KOL-2344

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ce15d0d) 93.73% compared to head (8914b3e) 93.92%.

❗ Current head 8914b3e differs from pull request most recent head c2546dd. Consider uploading reports for the commit c2546dd to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##            trunk     #347      +/-   ##
==========================================
+ Coverage   93.73%   93.92%   +0.18%     
==========================================
  Files         118      115       -3     
  Lines        7682     7490     -192     
  Branches      926      890      -36     
==========================================
- Hits         7201     7035     -166     
+ Misses        368      343      -25     
+ Partials      113      112       -1     

Flag	Coverage Δ
integration	73.17% <ø> (+0.76%)	⬆️

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[ly-kolena]

Non-blocking question: can this be simplified? something like pandas = "<1.6"?

[gordonhart]

We've run into issues with low pandas versions and had to explicitly add the >=1.1 constraint. The different pins for Python 3.11 are necessary (went through this trial-and-error on #7)