chore: change release workflow to use a deploy key

Author: marklawlor

.github/workflows/release.yml

@@ -11,6 +11,8 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
+        with:
+          ssh-key: ${{ secrets.DEPLOY_KEY }}
 
       - name: Setup
         uses: ./.github/actions/setup