Update Rust crate which to v7.0.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
which	dependencies	patch	7.0.0 -> 7.0.2

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Release Notes

harryfei/which-rs (which)

v7.0.2

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• Don't return paths containing the single dot . reference to the current directory, even if the original request was given in
  terms of the current directory. Thanks @​jakobhellermann for this contribution!

v7.0.1

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• Get user home directory from env_home instead of home. Thanks @​micolous for this contribution!
• If home directory is unavailable, do not expand the tilde to an empty string. Leave it as is.

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