release-1.33: Bump to envoy 1.35.6

[tsaarni]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.85%. Comparing base (766dfd3) to head (54a0bd5).
⚠️ Report is 1 commits behind head on release-1.33.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.33    #7282      +/-   ##
================================================
+ Coverage         81.05%   81.85%   +0.79%     
================================================
  Files               130      130              
  Lines             19669    15747    -3922     
================================================
- Hits              15943    12889    -3054     
+ Misses             3442     2574     -868     
  Partials            284      284              

Files with missing lines	Coverage Δ
cmd/contour/gatewayprovisioner.go	43.42% <100.00%> (-0.46%)	⬇️

... and 124 files with indirect coverage changes

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