CLN: isort from attrs_caching.py to eval.py
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`

More updates from issue #23334:
- asv_bench/benchmarks/attrs_caching.py
- asv_bench/benchmarks/binary_ops.py
- asv_bench/benchmarks/categorical.py
- asv_bench/benchmarks/ctors.py
- asv_bench/benchmarks/dtypes.py
- asv_bench/benchmarks/eval.py
