[Automated] Update net-gateway-api nightly

[knative-automation]

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

Produced via:

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

Details:

bumping knative.dev/net-gateway-api d35cd18...a501be7:
  > a501be7 bump golang (# 626)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.25%. Comparing base (2949f76) to head (0486816).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #14937      +/-   ##
==========================================
+ Coverage   84.21%   84.25%   +0.04%     
==========================================
  Files         213      213              
  Lines       16635    16635              
==========================================
+ Hits        14009    14016       +7     
+ Misses       2280     2275       -5     
+ Partials      346      344       -2     

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[dprotaso]

/retest

[dprotaso]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, knative-automation

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[dprotaso]

/retest

[dprotaso]

/retest