chore(deps): 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]>

Author: dependabot[bot]

.github/workflows/deploy.yaml

@@ -281,7 +281,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Download artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: pdu-${{ matrix.target }}
 
@@ -325,7 +325,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Download all artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: ./downloads
 
@@ -394,7 +394,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Download checksums
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: checksums
           path: ./checksums