bump istio to v1.27.3

[dprotaso]

No description provided.

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso

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[dprotaso]

/cherry-pick release-1.20

[knative-prow-robot]

@dprotaso: once the present PR merges, I will cherry-pick it on top of release-1.20 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.20

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.96%. Comparing base (1d8e257) to head (6a992ab).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1479      +/-   ##
==========================================
+ Coverage   80.05%   81.96%   +1.90%     
==========================================
  Files          23       23              
  Lines        1920     1519     -401     
==========================================
- Hits         1537     1245     -292     
+ Misses        289      180     -109     
  Partials       94       94              

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[dprotaso]

bump

[nader-ziada]

/lgtm

[knative-prow-robot]

@dprotaso: new pull request created: #1481

In response to this:

/cherry-pick release-1.20

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.