Bump actions/upload-artifact from 5 to 6 (#1427)

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

---
updated-dependencies:
- dependency-name: actions/upload-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>
Co-authored-by: Orhan Eroglu <[email protected]>

Author: dependabot[bot]

.github/workflows/asv-benchmarking-pr.yml

@@ -55,7 +55,7 @@ jobs:
           asv compare --split ${{ github.event.pull_request.base.sha }} ${GITHUB_SHA} > asv_compare_results.txt
         working-directory: ${{ env.ASV_DIR }}
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         if: always()
         with:
           name: asv-benchmark-results-${{ runner.os }}