test, images: update helm to 3.7.0

[kaworu]

See #17434 (review) and the following discussion for context.

[kaworu]

/test

Job 'Cilium-PR-K8s-1.19-kernel-5.4' failed and has not been observed before, so may be related to your PR:

Click to show.

Test Name

K8sDatapathConfig AutoDirectNodeRoutes Check connectivity with sockops and direct routing

Failure Output

FAIL: Error creating resource /home/jenkins/workspace/Cilium-PR-K8s-1.19-kernel-5.4/src/github.com/cilium/cilium/test/k8sT/manifests/l3-policy-demo.yaml: Cannot retrieve cilium pod cilium-w2ldb policy revision: cannot get revision from json output '': could not parse JSON from command "kubectl exec -n kube-system cilium-w2ldb -- cilium policy get -o json"

If it is a flake, comment /mlh new-flake Cilium-PR-K8s-1.19-kernel-5.4 so I can create a new GitHub issue to track it.

Job 'Cilium-PR-K8s-1.16-net-next' failed and has not been observed before, so may be related to your PR:

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Test Name

K8sServicesTest Checks service across nodes Tests NodePort BPF Tests with direct routing Tests NodePort

Failure Output

FAIL: Can not connect to service "tftp://192.168.36.12:30632/hello" from outside cluster (1/10)

If it is a flake, comment /mlh new-flake Cilium-PR-K8s-1.16-net-next so I can create a new GitHub issue to track it.