Update rust.yml

cargo audit install

Author: rrrodzilla

.github/workflows/rust.yml

@@ -50,6 +50,13 @@ jobs:
     name: Security Audit
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v3
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - run: cargo install cargo-audit
       - uses: actions-rs/audit-check@v1.2.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}