build(deps): bump actions/download-artifact from 6 to 7 (#7769)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/coverage.yml

@@ -93,11 +93,11 @@ jobs:
       - name: Install lcov
         run: sudo apt install -y lcov
       - name: Download unit test coverage
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           name: unit-test-coverage
       - name: Download integration test coverage
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           name: integration-test-coverage
       - name: Merge coverage reports

.github/workflows/rust-gpu.yml

@@ -56,7 +56,7 @@ jobs:
         os: [ ubuntu-latest ]
     steps:
       - name: Download test report
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           name: junit-${{ matrix.os }}.xml
       - name: Process test report

.github/workflows/rust.yml

@@ -63,7 +63,7 @@ jobs:
         os: [ ubuntu-latest, windows-latest, macos-latest  ]
     steps:
       - name: Download test report
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           name: junit-${{ matrix.os }}.xml
       - name: Process test report