[release-v0.42.x] bump github.com/tektoncd/chains from 0.26.5 to 0.26.6

[dependabot]

Bumps github.com/tektoncd/chains from 0.26.5 to 0.26.6.

Release notes

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

Tekton Chains Release v0.26.6

-Docs @ v0.26.6 -Examples @ v0.26.6

Installation one-liner

kubectl apply -f https://infra.tekton.dev/tekton-releases/chains/previous/v0.26.6/release.yaml

Attestation

The Rekor UUID for this release is 108e9186e8c5677a9cc2851aeabc5d55eb1dce87413ca45c2e7196726dd0e84ea1255a41f3d43ca2

Obtain the attestation:

REKOR_UUID=108e9186e8c5677a9cc2851aeabc5d55eb1dce87413ca45c2e7196726dd0e84ea1255a41f3d43ca2
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/v0.26.6/release.yaml
REKOR_UUID=108e9186e8c5677a9cc2851aeabc5d55eb1dce87413ca45c2e7196726dd0e84ea1255a41f3d43ca2
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 + ":v0.26.6@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)

Commits

• ef8b3d7 chore(deps): bump chainguard-dev/actions/kind-diag (#1760)
• 0e4035a chore(deps): bump github.com/tektoncd/pipeline in the all group (#1774)
• 866fb33 chore(deps): bump chainguard-dev/actions/kind-diag from 1.6.14 to 1.6.25 (#1750)
• f7a6a0c chore(deps): bump github/codeql-action/autobuild from 3.30.7 to 3.30.9 (#1749)
• 0ed3710 chore(deps): bump github/codeql-action/init from 3.30.7 to 3.30.9 (#1748)
• 38dd2e8 chore(deps): bump step-security/harden-runner from 2.13.1 to 2.13.3 (#1725)
• cec078d remove symlinks (#1746)
• 744e3b3 chore(deps): bump golangci/golangci-lint-action from 9.2.0 to 9.2.1 (#1719)
• 50dacd2 chore(deps): bump github/codeql-action/analyze from 3.30.7 to 3.30.9 (#1734)
• a422ae9 chore(deps): bump github.com/tektoncd/pipeline in the all group (#1729)
• Additional commits viewable in compare view

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[divyansh42]

/lgtm

[tekton-robot]

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