chore: update actions/download-artifact action to v5

Author: renovate[bot]

.github/workflows/build_web.yml

@@ -129,7 +129,7 @@ jobs:
         with:
           app-id: ${{ vars.GH_APP_ID }}
           private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           name: reearth-web
       - name: Rename artifact