Update anchore/sbom-action action to v0.20.8

| datasource  | package             | from    | to      |
| ----------- | ------------------- | ------- | ------- |
| github-tags | anchore/sbom-action | v0.20.7 | v0.20.8 |


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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -224,7 +224,7 @@ jobs:
 
       - name: Download Syft
         if: ${{ inputs.is_production_release }}
-        uses: anchore/sbom-action/download-syft@d8a2c0130026bf585de5c176ab8f7ce62d75bf04 # v0.20.7
+        uses: anchore/sbom-action/download-syft@aa0e114b2e19480f157109b9922bda359bd98b90 # v0.20.8
 
       - name: Install Cosign
         if: ${{ inputs.is_production_release }}