Define top level Permission for cli.yml workflow

[Akash-Singh04]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Which issue(s) this PR fixes:
Part of #5048

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[karmada-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 28.22%. Comparing base (5e8152a) to head (c648f63).
Report is 9 commits behind head on master.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5079   +/-   ##
=======================================
  Coverage   28.21%   28.22%           
=======================================
  Files         632      632           
  Lines       43458    43551   +93     
=======================================
+ Hits        12262    12291   +29     
- Misses      30298    30363   +65     
+ Partials      898      897    -1     

Flag	Coverage Δ
unittests	28.22% <ø> (+<0.01%)	⬆️

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