chore(deps): bump github.com/tektoncd/chains from 0.26.3 to 0.27.2

[dependabot]

Bumps github.com/tektoncd/chains from 0.26.3 to 0.27.2.

Release notes

Sourced from github.com/tektoncd/chains's releases.

Tekton Chains release v0.27.2 "Release v0.27.2"

-Docs @ v0.27.2 -Examples @ v0.27.2

Installation one-liner

kubectl apply -f https://infra.tekton.dev/tekton-releases/chains/previous/v0.27.2/release.yaml

Attestation

The Rekor UUID for this release is 108e9186e8c5677a0ff10e5cf17374dc985416b7f8fb979e5fc6a2a065e6e8b92f0444b07ab866f2

Obtain the attestation:

REKOR_UUID=108e9186e8c5677a0ff10e5cf17374dc985416b7f8fb979e5fc6a2a065e6e8b92f0444b07ab866f2
rekor-cli get --uuid $REKOR_UUID --format json | jq -r .Attestation | jq .

Verify that all container images in the attestation are in the release file:

RELEASE_FILE=https://infra.tekton.dev/tekton-releases/chains/previous/v0.27.2/release.yaml
REKOR_UUID=108e9186e8c5677a0ff10e5cf17374dc985416b7f8fb979e5fc6a2a065e6e8b92f0444b07ab866f2
Obtains the list of images with sha from the attestation
REKOR_ATTESTATION_IMAGES=$(rekor-cli get --uuid "$REKOR_UUID" --format json | jq -r .Attestation | jq -r '.subject[]|.name + ":v0.27.2@sha256:" + .digest.sha256')
Download the release file
curl -L "$RELEASE_FILE" > release.yaml
For each image in the attestation, match it to the release file
for image in $REKOR_ATTESTATION_IMAGES; do
printf $image; grep -q $image release.yaml && echo " ===> ok" || echo " ===> no match";
done

Changes

Features

... (truncated)

Changelog

Sourced from github.com/tektoncd/chains's changelog.

Tekton Chains Releases

Release Frequency

Tekton Chains follows the Tekton community [release policy][release-policy] as follows:

• Versions are numbered according to semantic versioning: vX.Y.Z
• At a minimum four LTS release are produced. Additional releases are produced based on availability of new features to be released
• Four releases a year are chosen for long term support (LTS). All remaining releases are supported for approximately 1 month.
  • The first Tekton Chains LTS release will be v0.13.0 in October 2022

Tekton Chains produces nightly builds, publicly available on ghcr.io/tektoncd/chains/controller-92006fd957c0afd31de6a40b3e33b39f.

Transition Process

Before release v0.13 Tekton Chains has worked on the basis of an undocumented support period, providing patch releases when needed. While transitioning to the new support model, v0.11 and v0.12 will be supported for four months from the initial publishing date.

Release Process

Tekton Chains releases are made of YAML manifests and container images. Manifests are published to cloud object-storage as well as [GitHub][tekton-chains-releases]. Container images are signed by [Sigstore][sigstore] via [Tekton Chains][tekton-chains]; signatures can be verified through the [public key][chains-public-key] hosted by the Tekton Chains project.

Further documentation available:

• The Tekton Chains [release process][tekton-releases-docs]
• [Installing Tekton][tekton-installation]
• Standard for [release notes][release-notes-standards]

Backwards Incompatible Changes

In general we aim for new features to be added in a backwards compatible way, but sometimes we will need to make breaking changes. This policy outlines how we will make and communicate these.

NOTE: Tekton Chains is working towards a formal beta release. Until then, all features are technically considered alpha (though we continue to do our best to retain backwards compatibility).

... (truncated)

Commits

• 80338e0 chore(deps): bump actions/checkout from 6.0.2 to 6.0.3 (#1723)
• 69f62a9 chore(deps): bump github/codeql-action from 4.36.0 to 4.36.2 (#1720)
• 020a29a Add migration cleanup for SSA finalizers (#1699)
• 3fbaa94 Fix duplicate .att/.sig OCI layers for same-digest type hints (#1601)
• 5f38adb chore(deps): bump golangci/golangci-lint-action from 9.2.0 to 9.2.1 (#1683)
• 9169ea0 chore(deps): bump step-security/harden-runner from 2.19.3 to 2.19.4 (#1682)
• 0835671 chore(deps): bump github/codeql-action from 4.35.5 to 4.36.0 (#1681)
• 4bb6198 tekton: automate releases with Pipelines-as-Code (#1656)
• 4f9ad41 chore: update chains maintainers (#1679)
• 7a12f22 chore(deps): bump github/codeql-action from 4.35.4 to 4.35.5 (#1678)
• Additional commits viewable in compare view

[divyansh42]

/lgtm

[vdemeester]

/lgtm

[vdemeester]

/lgtm

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: divyansh42, vdemeester

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[divyansh42]

/lgtm