vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
Tests would fail with warnings:
.../mercurial/vfs.py:289: DeprecationWarning: onerror argument is deprecated, use onexc instead
The excinfo changed slightly, but we don't use it anyway.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
end_of_line = lf
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
end_of_line = lf
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false
end_of_line = lf