Using a deprecated version string for click

[crlane]

.venv/lib/python3.13/site-packages/click_aliases/__init__.py:10
  /Users/crlane/projects/rpo/.venv/lib/python3.13/site-packages/click_aliases/__init__.py:10: DeprecationWarning: The '__version__' attribute is deprecated and will be removed in Click 9.1. Use feature detection or 'importlib.metadata.version("click")' instead.
    _click7 = click.__version__[0] >= "7"

Using latest version (1.0.5), warnings are thrown. Can be changed without much impact I think. I'll try to work up a PR.