Fix sec context and resources for performance jobs

[skonto]

Proposed Changes

• Fixes the sec context
• Constraints the resources used to avoid variance

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (39ee6f7) 86.01% compared to head (6c870da) 86.02%.
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #14529   +/-   ##
=======================================
  Coverage   86.01%   86.02%           
=======================================
  Files         197      197           
  Lines       14915    14915           
=======================================
+ Hits        12829    12830    +1     
  Misses       1776     1776           
+ Partials      310      309    -1     

see 2 files with indirect coverage changes

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[ReToCode]

You probably want to keep the --- to avoid the GH lint warning.

[dprotaso]

/test performance-tests

[dprotaso]

I guess this doesn't have those assertions about rate - should we merge this after you address Reto's nit and then re-run the test in the other PR here - #14429 ?

[ReToCode]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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