Improve `netrc` security check error message

[picnixz]

Feature or enhancement

Proposal:

When netrc security check fails due to ownership issues, we display:

cpython/Lib/netrc.py

Lines 157 to 159 in e7295a8

	raise NetrcParseError(
	(f"~/.netrc file owner ({fowner}, {user}) does not match"
	" current user"))

The message is a bit misleading, so we should improve it.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

https://github.com/python/cpython/pull/135816/files#r2160393000

Linked PRs

• gh-135823: improve error message in netrc security checks #135827