update nested-pandas pin to >=0.3.8

[dougbrn]

Latest Nested-Dask should use Nested-Pandas v0.3.8+ to ensure latest functionality of sort_values and reduce on the Nested-Pandas side is being used in those calls on the Nested-Dask side.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.78%. Comparing base (cb2bbbf) to head (f4b1c80).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #91   +/-   ##
=======================================
  Coverage   95.78%   95.78%           
=======================================
  Files           9        9           
  Lines         261      261           
=======================================
  Hits          250      250           
  Misses         11       11           

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[github-actions]

Before [cb2bbbf] <v0.3.4>	After [b8d36c8]	Ratio	Benchmark (Parameter)
137M	137M	1	benchmarks.NestedFrameAddNested.peakmem_run
139M	139M	1	benchmarks.NestedFrameQuery.peakmem_run
834±2ms	831±4ms	1	benchmarks.NestedFrameQuery.time_run
136M	136M	1	benchmarks.NestedFrameReduce.peakmem_run
281±1ms	282±0.6ms	1	benchmarks.NestedFrameReduce.time_run
268±2ms	267±3ms	0.99	benchmarks.NestedFrameAddNested.time_run

Click here to view all benchmarks.