chore(ci): fix release tests command

[czeslavo]

What this PR does / why we need it:

When switching to running E2E tests instead of integration tests as the release gate, we missed adjusting commands properly: c6344be

Failing job: https://github.com/Kong/kubernetes-ingress-controller/actions/runs/3732606321/jobs/6333473197

Which issue this PR fixes:

Part of #3199

[pmalek]

😬

[czeslavo]

@pmalek I've noticed one more issue, PTAL: 9fb30c1

[codecov]

Codecov Report

Base: 74.0% // Head: 74.1% // Increases project coverage by +0.0% 🎉

Coverage data is based on head (9fb30c1) compared to base (38b801f).
Patch has no changes to coverable lines.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #3285   +/-   ##
=====================================
  Coverage   74.0%   74.1%           
=====================================
  Files        111     111           
  Lines      13275   13285   +10     
=====================================
+ Hits        9836    9851   +15     
+ Misses      2810    2808    -2     
+ Partials     629     626    -3     

Impacted Files	Coverage Δ
...nal/controllers/gateway/gatewayclass_controller.go	79.1% <0.0%> (-4.7%)	⬇️
internal/controllers/gateway/gateway_controller.go	68.7% <0.0%> (-1.7%)	⬇️
internal/controllers/reference/reference.go	41.0% <0.0%> (-0.8%)	⬇️
internal/dataplane/parser/wrappers_backendref.go	87.2% <0.0%> (-0.2%)	⬇️
internal/dataplane/parser/translate_knative.go	88.5% <0.0%> (-0.1%)	⬇️
internal/meshdetect/detector.go	79.4% <0.0%> (-0.1%)	⬇️
internal/dataplane/parser/translate_httproute.go	90.0% <0.0%> (-0.1%)	⬇️
internal/dataplane/kongstate/route.go	92.5% <0.0%> (-0.1%)	⬇️
internal/dataplane/kong_client.go	85.1% <0.0%> (ø)
internal/controllers/gateway/route_utils.go	76.2% <0.0%> (ø)
... and 5 more

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