build(deps): bump actions/download-artifact from 5 to 6 (#444)

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)

Author: dependabot[bot]

.github/workflows/check-package.yml

@@ -120,7 +120,7 @@ jobs:
           pip list
 
       - name: Download 📥
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           # download all build artifacts
           pattern: ${{ inputs.artifact-name }}-build-*
@@ -161,7 +161,7 @@ jobs:
           repository: Lightning-AI/utilities
       - name: Download 📥 all packages
         if: ${{ inputs.artifact-name != '' }}
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: ${{ inputs.artifact-name }}
           path: pypi

.github/workflows/release-pypi.yml

@@ -45,7 +45,7 @@ jobs:
       - name: Checkout 🛎️
         uses: actions/checkout@v5
       - name: Download 📥 artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: pypi-packages-${{ github.sha }}
           path: dist
@@ -69,7 +69,7 @@ jobs:
         with:
           submodules: recursive
       - name: Download 📥 artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: pypi-packages-${{ github.sha }}
           path: dist