chore(deps): bump github.com/tektoncd/pipeline from 1.14.1 to 1.15.0

[dependabot]

Bumps github.com/tektoncd/pipeline from 1.14.1 to 1.15.0.

Release notes

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

Tekton Pipeline release v1.15.0 "Toyger Orisa" LTS

🎉 Steady under pressure — configurable backoffs and battle-tested fixes 🎉

-Docs @ v1.15.0 -Examples @ v1.15.0

Installation one-liner

kubectl apply -f https://infra.tekton.dev/tekton-releases/pipeline/previous/v1.15.0/release.yaml

Attestation

The Rekor UUID for this release is 108e9186e8c5677a045c87c57225dfff98b32437f52b89e344c449bcd535b462d41fff9004b89d29

Obtain the attestation:

REKOR_UUID=108e9186e8c5677a045c87c57225dfff98b32437f52b89e344c449bcd535b462d41fff9004b89d29
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/pipeline/previous/v1.15.0/release.yaml
REKOR_UUID=108e9186e8c5677a045c87c57225dfff98b32437f52b89e344c449bcd535b462d41fff9004b89d29
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 + ":v1.15.0@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

• ✨ Add configuration for custom git resolver backoff (#10422)

Enables the configuration of backoffs for git resolver requests.

... (truncated)

Changelog

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

Tekton Pipeline Releases

Release Frequency

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

• Versions are numbered according to semantic versioning: vX.Y.Z
• A new release is produced on a monthly basis
• Four releases a year are chosen for long term support (LTS). All remaining releases are supported for approximately 1 month (until the next release is produced)
  • LTS releases take place in January, April, July and October every year
  • The first Tekton Pipelines LTS release will be v0.41.0 in October 2022
  • Releases happen towards the middle of the month, between the 13th and the 20th, depending on week-ends and readiness

Tekton Pipelines produces nightly builds, publicly available on gcr.io/tekton-nightly.

Transition Process

Before release v0.41 Tekton Pipelines has worked on the basis of an undocumented support period of four months, which will be maintained for the releases between v0.37 and v0.40.

Release Process

Tekton Pipeline releases are made of YAML manifests and container images. Manifests are published to cloud object-storage as well as [GitHub][tekton-pipeline-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 Pipeline [release process][tekton-releases-docs]
• [Installing Tekton][tekton-installation]
• Standard for [release notes][release-notes-standards]

Release

v1.15 (LTS)

• Latest Release: [v1.15.0][v1.15-0] (2026-07-31) ([docs][v1.15-0-docs], [examples][v1.15-0-examples])
• Initial Release: [v1.15.0][v1.15-0] (2026-07-31)
• End of Life: 2027-07-31
• Patch Releases: [v1.15.0][v1.15-0]

v1.12 (LTS)

... (truncated)

Commits

• 70f7308 Mount debug scripts read-only in step containers
• 4dd6081 Fix PipelineRun label fallback for empty generated name
• 4d090f0 Fix RestrictLength panic on all-symbol input
• 2e5237b feat: add configurable grace period for transient CreateContainerError
• d961bad test: add e2e test for OpenCensus to OpenTelemetry metrics migration
• cedd162 perf(controller): add informer cache transform to reduce memory usage
• 2952a15 Preserve Sidecar RestartPolicy on API conversion
• 3bef8e7 Fix wrong Deprecated godoc in affinity assistant
• d1d3c9d docs(security): enhance security best practices section with threat model con...
• c3696fe docs(security): add security best practices for workspace isolation across tr...
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 26.13%. Comparing base (239d996) to head (fdb5b5a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3889   +/-   ##
=======================================
  Coverage   26.13%   26.13%           
=======================================
  Files         465      465           
  Lines       24933    24933           
=======================================
  Hits         6516     6516           
  Misses      17697    17697           
  Partials      720      720           

Flag	Coverage Δ
unit-tests	26.13% <ø> (ø)

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[tekton-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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