[Release 1.32] Bump Traefik to v3.6.9

[manuelbuil]

Backport: #13693
Issue: #13699

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 21.45%. Comparing base (e1178e0) to head (19e5a96).
⚠️ Report is 1 commits behind head on release-1.32.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.32   #13700      +/-   ##
================================================
- Coverage         21.50%   21.45%   -0.05%     
================================================
  Files               192      192              
  Lines             15771    15771              
================================================
- Hits               3391     3384       -7     
- Misses            11929    11936       +7     
  Partials            451      451              

Flag	Coverage Δ
unittests	21.45% <ø> (-0.05%)	⬇️

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