Bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/upload-artifact` from 4 to 5
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

Updates `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/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -66,7 +66,7 @@ jobs:
         pip install --upgrade wheel setuptools build
     - name: Build package
       run: python -m build -s -w -o dist/
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v5
       with:
         name: dist
         path: dist
@@ -81,7 +81,7 @@ jobs:
         python-version: "3.12"
     - name: Install dependencies
       run: pip install twine
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       with:
         name: dist
         path: dist
@@ -93,7 +93,7 @@ jobs:
     needs: [dist_check]
     name: PyPI upload
     steps:
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       with:
         name: dist
         path: dist