ci: Add cargo deny checks

.gitlab-ci.yml

@@ -16,7 +16,7 @@ flatpak@aarch64:
   allow_failure: true
   extends: ".flatpak@aarch64"
 
-rustfmt:
+cargo-fmt:
   image: "rust:slim"
   script:
     - rustup component add rustfmt
@@ -77,6 +77,13 @@ cargo-clippy:
         cargo clippy -- -D warnings
       END
 
+cargo-audit:
+  interruptible: true
+  image: rust
+  script:
+    - cargo install cargo-deny
+    - cargo deny check
+
 pages:
   stage: deploy
   tags: