Update actions/download-artifact action to v5 (#2)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/deploy-dev.yml

@@ -39,7 +39,7 @@ jobs:
     needs: build
     steps:
       - name: Download the built site
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: "site-built-${{ env.TARGET_REPO_NAME }}"
           path: public

.github/workflows/deploy-prod.yml

@@ -47,7 +47,7 @@ jobs:
         with:
           submodules: recursive
       - name: Download the built site
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: "site-built-${{ env.TARGET_REPO_NAME }}"
           path: public