build(deps): bump anchore/sbom-action

Bumps the github-actions group with 1 update in the /.github/actions/bootstrap directory: [anchore/sbom-action](https://github.com/anchore/sbom-action).


Updates `anchore/sbom-action` from 0.20.6 to 0.20.8
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Changelog](https://github.com/anchore/sbom-action/blob/main/RELEASE.md)
- [Commits](anchore/sbom-action@f8bdd1d...aa0e114)

---
updated-dependencies:
- dependency-name: anchore/sbom-action
  dependency-version: 0.20.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/actions/bootstrap/action.yml

@@ -28,4 +28,4 @@ runs:
     # See https://goreleaser.com/blog/supply-chain-security/
     - name: installs syft for generating the SBOM with goreleaser
       if: "${{ inputs.goreleaser == 'true' }}"
-      uses: anchore/sbom-action/download-syft@f8bdd1d8ac5e901a77a92f111440fdb1b593736b # v0.20.6
+      uses: anchore/sbom-action/download-syft@aa0e114b2e19480f157109b9922bda359bd98b90 # v0.20.8