[Automated] Update net-istio nightly

[knative-automation]

/assign @knative/serving-writers /cc @knative/serving-writers

Produced via:

for x in net-istio.yaml; do
  curl https://storage.googleapis.com/knative-nightly/net-istio/latest/$x > ${GITHUB_WORKSPACE}/./third_party/istio-latest/$x
done

Details:

bumping knative.dev/net-istio 872cb3e...3cc8e7c:
  > 3cc8e7c bump istio 1.22.1 (# 1336)

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: knative-automation Once this PR has been reviewed and has the lgtm label, please assign dsimansk for approval. For more information see the Kubernetes Code Review Process.

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

Needs approval from an approver in each of these files: - **[OWNERS](https://github.com/knative/serving/blob/main/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.56%. Comparing base (faf421a) to head (4888e08).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #15338 +/- ## ========================================== + Coverage 84.49% 84.56% +0.06% ========================================== Files 219 219 Lines 13548 13548 ========================================== + Hits 11448 11457 +9 + Misses 1731 1725 -6 + Partials 369 366 -3 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.