automatic update

from rust-github/template@475b9b4

Author: github-actions

.github/workflows/audit.yml

@@ -16,6 +16,7 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+      - uses: Swatinem/rust-cache@v2
       - name: Run security audit
         uses: rustsec/[email protected]
         with: