Update deploy.yml

use checkout@v4

Author: blakmatrix

.github/workflows/deploy.yml

@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Not needed if lastUpdated is not enabled
       # - uses: pnpm/action-setup@v2 # Uncomment this if you're using pnpm