chore: #134 Fix image signature restoring old cosign format

Signed-off-by: Laurent Broudoux <[email protected]>

Author: lbroudoux

.github/workflows/build-package.yml

@@ -89,4 +89,4 @@ jobs:
           for tag in ${TAGS}; do
             images+="${tag}@${DIGEST} "
           done
-          cosign sign --yes ${images}
+          cosign sign --new-bundle-format=false --use-signing-config=false --yes ${images}