chore(deps): bump actions/download-artifact from 5 to 6 (#448)

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -285,7 +285,7 @@ jobs:
         
         docker image inspect kindest/node:v${{ matrix.k8s }}
     - name: Download staged Source Controller build
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: source-controller-bundle.tar
     - name: Relocate bundle
@@ -551,7 +551,7 @@ jobs:
         release_name: Release ${{ steps.get_version.outputs.VERSION }}
         draft: true
     - name: Download staged Source Controller build
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: source-controller-bundle.tar
     - name: Upload Source Controller release