Update caper for compatibility with Python 3.12+

[mihirsamdarshi]

When running with Python 3.12, the latest version of caper CLI (2.3.2) fails to run due to a dependency on the deprecated distutils package.

Reproduction: (uvx is used to install and run a Python CLI tool in an isolated venv)

docker run -it ghcr.io/astral-sh/uv:python3.12-bookworm-slim uvx caper -v

Output:

Installed 70 packages in 320ms
Traceback (most recent call last):
  File "/root/.cache/uv/archive-v0/P0Uct19t8BntLJuBLLj9W/bin/caper", line 5, in <module>
    from caper.cli import main
  File "/root/.cache/uv/archive-v0/P0Uct19t8BntLJuBLLj9W/lib/python3.12/site-packages/caper/cli.py", line 13, in <module>
    from .caper_args import ResourceAnalysisReductionMethod, get_parser_and_defaults
  File "/root/.cache/uv/archive-v0/P0Uct19t8BntLJuBLLj9W/lib/python3.12/site-packages/caper/caper_args.py", line 7, in <module>
    from .arg_tool import update_parsers_defaults_with_conf
  File "/root/.cache/uv/archive-v0/P0Uct19t8BntLJuBLLj9W/lib/python3.12/site-packages/caper/arg_tool.py", line 5, in <module>
    from distutils.util import strtobool
ModuleNotFoundError: No module named 'distutils'