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/provider-compatibility.yml

@@ -201,15 +201,15 @@ jobs:
           fi
         continue-on-error: true
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         if: steps.early_exit.outcome == 'success'
         with:
           name: ${{ matrix.tree_a }}.tar.gz
       - name: unpack first build
         if: steps.early_exit.outcome == 'success'
         run: tar xzf "${{ matrix.tree_a }}.tar.gz"
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         if: steps.early_exit.outcome == 'success'
         with:
           name: ${{ matrix.tree_b }}.tar.gz