Bump actions/download-artifact from 5 to 6

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/git-artifacts.yml

@@ -153,17 +153,17 @@ jobs:
       fail-fast: false
     steps:
       - name: Download pkg-${{env.ARCH_NAME}}
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: pkg-${{env.ARCH_NAME}}
           path: pkg-${{env.ARCH_NAME}}
       - name: Download bundle-artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: bundle-artifacts
           path: bundle-artifacts
       - name: Download build-installers.tgz
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: build-installers.tgz
       - name: Configure Git for Windows SDK