fixup/ci: audit and machete

Author: matthiasdebernardini

.github/workflows/rust.yml

@@ -172,4 +172,26 @@ jobs:
       - name: Check fmt
         run: cargo fmt --all -- --check
       - name: Clippy
-        run: cargo clippy --all-targets -- -Dwarnings
+        run: cargo clippy --all-targets -- -Dwarnings
+
+  security-audit:
+    name: Security Audit
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Install cargo-audit
+        run: cargo install cargo-audit
+      - name: Run cargo-audit
+        run: cargo audit
+
+  unused-dependencies:
+    name: Check Unused Dependencies
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Install cargo-machete
+        run: cargo install cargo-machete
+      - name: Run cargo-machete
+        run: cargo machete