Add security checks

Author: casibbald

.github/workflows/audit.yml

@@ -23,16 +23,37 @@ jobs:
       issues: write
     steps:
       - uses: actions/checkout@v4
+
+      # Cache Cargo dependencies
+      - name: Cache Cargo registry
+        uses: actions/cache@v3
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+
+      - name: Cache Cargo index
+        uses: actions/cache@v3
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-index-
+
+      - name: Cache target directory
+        uses: actions/cache@v3
+        with:
+          path: target
+          key: ${{ runner.os }}-cargo-target-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-target-
+
       - uses: actions-rust-lang/audit@v1
         name: Audit Rust Dependencies
         with:
           # Comma separated list of issues to ignore
           ignore: RUSTSEC-2020-0036
-
-  security_audit:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
       - uses: actions-rs/audit-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}