ci: add top-level permissions for least-privilege security

[Ankitsinghsisodya]

Summary

• Add permissions: contents: read to test-podman-next.yaml to restrict the default GITHUB_TOKEN to read-only access, following the principle of least privilege.

Fixes #3539

Test plan

• Verify CI passes — no functional change, workflow only needs read access

[knative-prow]

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This pull-request has been approved by: Ankitsinghsisodya
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[knative-prow]

Hi @Ankitsinghsisodya. Thanks for your PR.

I'm waiting for a knative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

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[Copilot]

Pull request overview

This PR aims to tighten GitHub Actions security by applying least-privilege GITHUB_TOKEN permissions, while also adjusting an existing workflow job to actually use its OS matrix.

Changes:

• Add top-level permissions: contents: read to the test-podman-next scheduled workflow.
• Update the Functions workflow’s test-e2e-podman job to run on ${{ matrix.os }} (so the ARM64 matrix entry is used).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/test-podman-next.yaml	Restricts default token permissions to contents: read at workflow scope.
.github/workflows/functions.yaml	Makes test-e2e-podman actually run per matrix.os instead of always ubuntu-latest.

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[Copilot]

The PR description/test plan says this is a no-functional-change update to add least-privilege permissions for test-podman-next.yaml, but this diff also changes the test-e2e-podman job to run on matrix.os (enabling the ARM64 runner entry in the matrix). Please update the PR description (and test plan) to reflect this additional CI behavior change, or split it into a separate PR if it’s unrelated to #3539.