build(deps): bump the ci group with 3 updates

Bumps the ci group with 3 updates: [anchore/sbom-action](https://github.com/anchore/sbom-action), [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) and [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request).


Updates `anchore/sbom-action` from 0.15.5 to 0.15.8
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Commits](24b0d52385...b6a39da807)

Updates `sigstore/cosign-installer` from 3.3.0 to 3.4.0
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](9614fae9e5...e1523de757)

Updates `peter-evans/create-pull-request` from 5.0.2 to 6.0.0
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](153407881e...b1ddad2c99)

---
updated-dependencies:
- dependency-name: anchore/sbom-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: ci
- dependency-name: sigstore/cosign-installer
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: ci
- dependency-name: peter-evans/create-pull-request
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: ci
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/update.yaml

@@ -84,7 +84,7 @@ jobs:
 
       - name: Create Pull Request
         id: cpr
-        uses: peter-evans/create-pull-request@153407881ec5c347639a548ade7d8ad1d6740e38 # v5.0.2
+        uses: peter-evans/create-pull-request@b1ddad2c994a25fbc81a28b3ec0e368bb2021c50 # v6.0.0
         with:
           token: ${{ secrets.BOT_GITHUB_TOKEN }}
           commit-message: |