Update anchore/sbom-action action to v0.18.0 (#961)

| datasource  | package             | from    | to      |
| ----------- | ------------------- | ------- | ------- |
| github-tags | anchore/sbom-action | v0.17.9 | v0.18.0 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -155,7 +155,7 @@ jobs:
         if: github.event_name != 'pull_request'
 
       - name: Download Syft
-        uses: anchore/sbom-action/download-syft@df80a981bc6edbc4e220a492d3cbe9f5547a6e75 # v0.17.9
+        uses: anchore/sbom-action/download-syft@f325610c9f50a54015d37c8d16cb3b0e2c8f4de0 # v0.18.0
         if: github.ref_type == 'tag'
 
       - name: Install Cosign