Fix GO-2024-2659 (#15547)

[skonto]

What this PR does / why we need it:

• See Fix GO-2024-2659 knative/serving#15547

[skonto]

Vulnerability #1: GO-2024-3106
    Stack exhaustion in Decoder.Decode in encoding/gob
  More info: https://pkg.go.dev/vuln/GO-2024-3106
  Standard library
    Found in: encoding/[email protected]
    Fixed in: encoding/[email protected]
    Example traces found:
Error:       #1: cmd/activator/main.go:[20](https://github.com/openshift-knative/serving/actions/runs/11163315729/job/31029963944?pr=904#step:4:21)5:2: activator.main calls websocket.ManagedConnection.Shutdown, which eventually calls gob.Decoder.Decode

[ReToCode]

/lgtm
/approve

/hold for the go version thing

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ReToCode, skonto

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[skonto]

/cherry-pick release-v1.15

[openshift-cherrypick-robot]

@skonto: once the present PR merges, I will cherry-pick it on top of release-v1.15 in a new PR and assign it to you.

In response to this:

/cherry-pick release-v1.15

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[skonto]

/unhold

[openshift-cherrypick-robot]

@skonto: new pull request created: #906

In response to this:

/cherry-pick release-v1.15

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.