chore(deps): update sigstore/cosign-installer action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
sigstore/cosign-installer	action	major	v3.8.1 → v4.1.2

---

Release Notes

sigstore/cosign-installer (sigstore/cosign-installer)

v4.1.2

Compare Source

What's Changed

• Bump cosign to 3.0.6 in #​232

v4.1.1

Compare Source

What's Changed

• chore: update default cosign-release to v3.0.5 in #​223

Full Changelog: sigstore/cosign-installer@v4.1.0...v4.1.1

v4.1.0

Compare Source

What's Changed

We recommend updating as soon as possible as this includes bug fixes for Cosign. We also recommend removing with: cosign-release and strongly discourage using cosign-release unless you have a specific reason to use an older version of Cosign.

• Bump cosign to 3.0.5 in #​220
• fix: add retry to curl downloads for transient network failures in #​210

Full Changelog: sigstore/cosign-installer@v4.0.0...v4.1.0

v4.0.0

Compare Source

What's Changed?

Note: You must upgrade to cosign-installer v4 if you want to install Cosign v3+. You may still install Cosign v2.x with cosign-installer v4.

In version v3+, using cosign sign-blob requires adding the --bundle flag which may require you to update your signing command.

• Add support for Cosign v3 releases (#​201)

v3.10.1

Compare Source

What's Changed?

Note: cosign-installer v3.x cannot be used to install Cosign v3.x. You must upgrade to cosign-installer v4 in order to use Cosign v3.

Note: This is planned to be the final release of Cosign v2, though we will cut new releases for any critical security or bug fixes. We recommend transitioning to Cosign v3.

• Bump default Cosign to v2.6.1 (#​203)

v3.10.0

Compare Source

What's Changed

• Bump default Cosign to v2.6.0 in #​200

Full Changelog: sigstore/cosign-installer@v3.9.2...v3.10.0

v3.9.2

Compare Source

What's Changed

• not fail fast and setup permissions in #​195
• drop old unsupported versions <v2.0.0 in #​192
• Update default to v2.5.3 in #​196

Full Changelog: sigstore/cosign-installer@v3.9.1...v3.9.2

v3.9.1

Compare Source

What's Changed

• default action install to use release v2.5.1 by @​cpanato in #​193
• default cosign to v2.5.2 by @​cpanato in #​194

Full Changelog: sigstore/cosign-installer@v3.9.0...v3.9.1

v3.9.0

Compare Source

What's Changed

• Bump actions/setup-go from 5.4.0 to 5.5.0 by @​dependabot in #​189
• bump cosign install to use release v2.5.0 as default by @​cpanato in #​191

Full Changelog: sigstore/cosign-installer@v3...v3.9.0

v3.8.2

Compare Source

What's Changed

• install cosign v2 from main in #​186

Full Changelog: sigstore/cosign-installer@v3...v3.8.2

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.