ci: security (#133)

* ci: add security audit job to workflow

.github/workflows/ci.yml

@@ -132,6 +132,23 @@ jobs:
 
       - name: Run tests with coverage
         run: cargo llvm-cov --all-features
+  
+  security_audit:
+    name: Security Audit
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+      
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Install cargo-audit
+        run: cargo install cargo-audit
+      
+      - name: Run cargo-audit
+        run: cargo audit
 
   doc:
     name: Generate Documentation