[release-v0.44.x] bump github.com/tektoncd/chains from 0.26.8 to 0.26.9

[dependabot]

Bumps github.com/tektoncd/chains from 0.26.8 to 0.26.9.

Release notes

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

Tekton Chains release v0.26.9

• Docs @ v0.26.9
• Examples @ v0.26.9

Installation one-liner

kubectl apply -f https://infra.tekton.dev/tekton-releases/chains/previous/v0.26.9/release.yaml

Attestation

The Rekor UUID for this release is 108e9186e8c5677a9be065f521117233096593bc64a7419eea1647e468ad275d48d8f7592282ff69

Obtain the attestation:

REKOR_UUID=108e9186e8c5677a9be065f521117233096593bc64a7419eea1647e468ad275d48d8f7592282ff69
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/v0.26.9/release.yaml
REKOR_UUID=108e9186e8c5677a9be065f521117233096593bc64a7419eea1647e468ad275d48d8f7592282ff69
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 + ":v0.26.9@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

• e61d96c chore(deps): bump the all group with 7 updates (#1858)
• a47eb68 chore(deps): bump chainguard-dev/actions/kind-diag in the all group (#1846)
• See full diff in compare view

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