Bump actions/download-artifact from 3 to 4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/release.yml

@@ -136,7 +136,7 @@ jobs:
 
       # Download the binary from the previous job
       - name: Download x86_64 linux binary
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: parachain-template-node
           path: ${{ github.workspace }}