Exclude kourier tls runtime

[skonto]

Fixes #

Proposed Changes

• Using https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#jobsjob_idstrategymatrixexclude
• See issue: Kourier TLS runtime suite fails sporadically #15697

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.84%. Comparing base (19b9a09) to head (9c9571d).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15696      +/-   ##
==========================================
+ Coverage   80.78%   80.84%   +0.06%     
==========================================
  Files         222      222              
  Lines       18025    18025              
==========================================
+ Hits        14561    14573      +12     
+ Misses       3092     3082      -10     
+ Partials      372      370       -2     

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[skonto]

/hold
I have seen a failure on 1.31.x too here: https://github.com/knative/serving/actions/runs/12773396668/job/35605270785?pr=15695.

[skonto]

/assign @dprotaso

[dprotaso]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, skonto

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[dprotaso]

/hold cancel