Fix path to NetworkManager binary

[antonym]

NetworkManager exists in /usr/sbin/NetworkManager by default.

[Copilot]

Pull request overview

This PR corrects the file system path used to check for the NetworkManager binary from /usr/bin/NetworkManager to /usr/sbin/NetworkManager, which is the standard location for this system binary.

• Updates the path check for NetworkManager to use the correct /usr/sbin directory
• Ensures consistency with other NetworkManager path references in the codebase (line 505)

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[Itxaka]

You are completely rigth, thanks for the patch!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.66%. Comparing base (68cca9a) to head (cba55f2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #245   +/-   ##
=======================================
  Coverage   66.66%   66.66%           
=======================================
  Files           1        1           
  Lines         168      168           
=======================================
  Hits          112      112           
  Misses         39       39           
  Partials       17       17           

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