Add cargo audit check

Signed-off-by: trivernis <trivernis@protonmail.com>

.github/workflows/rust.yml

@@ -19,9 +19,7 @@ jobs:
       uses: actions/cache@v2
       with:
         path: |
-          target/**/build
-          target/**/deps
-          target/**/incremental
+          target
           ~/.cargo/
         key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
         restore-keys: |
@@ -30,6 +28,10 @@ jobs:
       run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
+    - name: Run audit
+      uses: actions-rs/audit-check@v1
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
 
 
   build-release: