bump Istio to v1.28.0

[dprotaso]

No description provided.

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [dprotaso]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[dprotaso]

/assign @nader-ziada @linkvt

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.96%. Comparing base (480e31d) to head (b426d9c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1491   +/-   ##
=======================================
  Coverage   81.96%   81.96%           
=======================================
  Files          23       23           
  Lines        1519     1519           
=======================================
  Hits         1245     1245           
  Misses        180      180           
  Partials       94       94           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[dprotaso]

/retest

odd we're not actually testing the gateway api path

[linkvt]

/lgtm