avoid ci error

> Error: Input required and not supplied: key

Author: tshepang

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
           ~/.cargo/registry/index/
           ~/.cargo/registry/cache/
           target/
-        key: ${{ hashFiles('Cargo.lock') }}
+        key: key-${{ hashFiles('Cargo.lock') }}
     - uses: actions/checkout@v6
     - uses: rustsec/audit-check@v2
       with: