chore(deps): bump actions/upload-artifact from 5 to 6

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

.github/workflows/build-hash-router.yml

@@ -44,7 +44,7 @@ jobs:
           # BASE_URL: '/docusaurus/' # hash router +
 
       - name: Upload Website artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: website-hash-router-archive
           path: website/build

.github/workflows/tests-e2e.yml

@@ -109,7 +109,7 @@ jobs:
           DOCUSAURUS_PERF_LOGGER: 'true'
         working-directory: test-website-in-workspace
       - name: Upload Website artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: website-e2e-windows
           path: test-website-in-workspace/build