Add permission to read contents

Author: jrebelo

.github/workflows/publish.yml

@@ -11,6 +11,7 @@ jobs:
     environment: release  # Optional: for enhanced security
     permissions:
       id-token: write     # Required for OIDC token exchange
+      contents: read
     steps:
     - uses: actions/checkout@v4
     - uses: rust-lang/crates-io-auth-action@v1