chore(deps): bump actions/download-artifact from 6 to 7 (#3605)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: William Candillon <[email protected]>

Author: dependabot[bot]

.github/workflows/build-dawn.yml

@@ -217,13 +217,13 @@ jobs:
         uses: actions/[email protected]
 
       - name: Download all build artifacts
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           pattern: build-*
           path: artifacts
 
       - name: Download headers
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           name: dawn-headers
           path: dawn-headers