Update ghcr.io/enterprise-contract/golden-container:latest Docker digest to acf8da7

Author: renovate[bot]

.github/workflows/checks.yaml

@@ -20,7 +20,7 @@ jobs:
     - name : Run EC Validate (keyless)
       uses: ./
       with:
-        image: ghcr.io/enterprise-contract/golden-container:latest@sha256:64b55bea485d4054457354413de674a7388588680204a8ac00e23d16a38cf1b7 # latest
+        image: ghcr.io/enterprise-contract/golden-container:latest@sha256:acf8da7274379b26ea5a299b208e84499c17c7e352a1fb02f2cf2bbd9251fc58 # latest
         identity: https:\/\/github\.com\/(slsa-framework\/slsa-github-generator|enterprise-contract\/golden-container)\/
         issuer: https://token.actions.githubusercontent.com