[cherry-pick] Move strong_ssl_ciphers to top level in harbor.yaml

[stonezdj]

fixes #19912

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Comprehensive Summary of your change

Issue being fixed

Fixes #(issue)

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• Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.53%. Comparing base (d55ed25) to head (f485d57).
Report is 1 commits behind head on release-2.10.0.

Additional details and impacted files

@@                Coverage Diff                 @@
##           release-2.10.0   #20022      +/-   ##
==================================================
- Coverage           67.54%   67.53%   -0.02%     
==================================================
  Files                 991      991              
  Lines              109181   109181              
  Branches             2719     2719              
==================================================
- Hits                73748    73736      -12     
- Misses              31465    31477      +12     
  Partials             3968     3968              

Flag	Coverage Δ
unittests	67.53% <ø> (-0.02%)	⬇️

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see 5 files with indirect coverage changes

[wy65701436]

lgtm