JNI bit cast [skip ci]

[revans2]

In #7373 logical_cast is renamed to bit_cast. That breaks JNI, and this fixes it.

[codecov]

Codecov Report

Merging #7493 (def9277) into branch-0.19 (43b44e1) will increase coverage by 0.45%.
The diff coverage is 88.02%.

@@               Coverage Diff               @@
##           branch-0.19    #7493      +/-   ##
===============================================
+ Coverage        81.80%   82.26%   +0.45%     
===============================================
  Files              101      101              
  Lines            16695    17244     +549     
===============================================
+ Hits             13658    14185     +527     
- Misses            3037     3059      +22     

Impacted Files	Coverage Δ
python/cudf/cudf/utils/docutils.py	97.36% <50.00%> (-2.64%)	⬇️
python/cudf/cudf/testing/testing.py	80.00% <57.14%> (-1.04%)	⬇️
python/cudf/cudf/core/column/timedelta.py	88.57% <75.00%> (+0.33%)	⬆️
python/cudf/cudf/core/column/categorical.py	91.74% <77.14%> (-0.49%)	⬇️
python/cudf/cudf/core/column/datetime.py	89.63% <78.57%> (+0.58%)	⬆️
python/dask_cudf/dask_cudf/core.py	71.67% <79.41%> (-2.60%)	⬇️
python/cudf/cudf/core/multiindex.py	82.90% <90.90%> (+0.73%)	⬆️
python/cudf/cudf/core/tools/datetimes.py	84.53% <93.33%> (+0.89%)	⬆️
python/cudf/cudf/core/column_accessor.py	95.47% <95.65%> (+2.53%)	⬆️
python/cudf/cudf/core/column/column.py	87.86% <96.42%> (+0.43%)	⬆️
... and 65 more

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[revans2]

@gpucibot merge