chore: Run cargo deny workflow when its config changes

Signed-off-by: robot9001 <robo9k@symlink.io>

Author: robo9k

.github/workflows/deny.yml

@@ -9,12 +9,14 @@ on:
       - '**/Cargo.toml'
       - '**/Cargo.lock'
       - '.github/workflows/deny.yml'
+      - 'deny.toml'
   pull_request:
     branches: [ main ]
     paths:
       - '**/Cargo.toml'
       - '**/Cargo.lock'
       - '.github/workflows/deny.yml'
+      - 'deny.toml'
 
 env:
   CARGO_TERM_COLOR: always