tekton: using golang 1.18.7 on release publish tasks

[vdemeester]

Changes

Use go 1.18.7 in the release publish task.
Golang 1.18.7 Includes security fixes for archive/tar (CVE-2022-2879), net/http (CVE-2022-2880), and regexp (CVE-2022-41715).

/kind misc

Submitter Checklist

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Release Notes

NONE

[lbernick]

Does our CI test this somehow? Or do we have to manually verify?

[dibyom]

/test check-pr-has-kind-labe

[tekton-robot]

@dibyom: The specified target(s) for /test were not found.
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[dibyom]

yeah we might have to upgrade our CI test builder images too

[vdemeester]

yeah we might have to upgrade our CI test builder images too

It is already updated in tektoncd/plumbing#1237 👼🏼

[abayer]

/approve

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abayer, dibyom

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[abayer]

/test check-pr-has-kind-label

[tekton-robot]

@abayer: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test pull-tekton-pipeline-alpha-integration-tests
• /test pull-tekton-pipeline-build-tests
• /test pull-tekton-pipeline-integration-tests
• /test tekton-pipeline-unit-tests

The following commands are available to trigger optional jobs:

• /test pull-tekton-pipeline-go-coverage

Use /test all to run all jobs.

In response to this:

/test check-pr-has-kind-label

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/test-infra repository.

[abayer]

/lgtm