chore(deps): update anchore/sbom-action action to v0.20.1 (#393)

| datasource  | package             | from    | to      |
| ----------- | ------------------- | ------- | ------- |
| github-tags | anchore/sbom-action | v0.17.2 | v0.20.1 |

Author: stackable-bot

.github/workflows/pr_cockpit.yml

@@ -109,7 +109,7 @@ jobs:
         uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3.9.1
 
       - name: Install syft
-        uses: anchore/sbom-action/download-syft@61119d458adab75f756bc0b9e4bde25725f86a7a # v0.17.2
+        uses: anchore/sbom-action/download-syft@9246b90769f852b3a8921f330c59e0b3f439d6e9 # v0.20.1
 
       - name: Setup Rust Cache
         uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0