Enable RUF and UP rules

benchmarks/bench_translations.py

examples/expansion-toys.py

pyproject.toml

sumpy/__init__.py

sumpy/cse.py

sumpy/e2e.py

sumpy/e2p.py

sumpy/expansion/__init__.py

sumpy/expansion/diff_op.py

sumpy/expansion/level_to_order.py

sumpy/expansion/local.py

sumpy/expansion/loopy.py

sumpy/fmm.py

sumpy/kernel.py

sumpy/p2e.py

sumpy/p2p.py

sumpy/qbx.py

sumpy/symbolic.py

sumpy/tools.py

sumpy/toys.py