CVE-2026-61833: zot: Bearer authentication maps DELETE to push scope, allowing unauthorized deletion

A bearer token with only pull and push scopes can successfully delete manifests and blobs from a zot registry. The bearer authentication handler maps all non-GET/HEAD HTTP methods, including DELETE, to the "push" action, and the DistSpecAuthzHandler middleware is bypassed entirely for bearer-authenticated requests. This allows any client holding a push-only bearer token to delete arbitrary manifests and blobs within the token’s repository scope, in violation of the Docker Distribution Token Authentication Specification.