Bump actions/download-artifact from 2.1.0 to 3 (#27)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2.1.0 to 3.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v2.1.0...v3)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  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>

.github/workflows/ci.yaml

@@ -319,11 +319,11 @@ jobs:
             help: "https://kind.sigs.k8s.io/docs/user/local-registry/"
         EOF
     - name: Download staged Cartographer Conventions build
-      uses: actions/download-artifact@v2.1.0
+      uses: actions/download-artifact@v3
       with:
         name: cartographer-conventions-controller-bundle.tar
     - name: Download staged Cartographer Conventions build
-      uses: actions/download-artifact@v2.1.0
+      uses: actions/download-artifact@v3
       with:
         name: cartographer-conventions-samples-bundle.tar
     - name: Relocate bundles
@@ -580,11 +580,11 @@ jobs:
         release_name: Release ${{ steps.get_version.outputs.VERSION }}
         draft: true
     - name: Download staged Cartographer Conventions build
-      uses: actions/download-artifact@v2.1.0
+      uses: actions/download-artifact@v3
       with:
         name: cartographer-conventions-controller-bundle.tar
     - name: Download staged samples build
-      uses: actions/download-artifact@v2.1.0
+      uses: actions/download-artifact@v3
       with:
         name: cartographer-conventions-samples-bundle.tar
     - name: Upload Cartographer Conventions release