chore(deps): update actions/upload-artifact action to v6 (#270)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/test-build-resources-with-pandoc.yml

@@ -27,15 +27,15 @@ jobs:
           entrypoint: "/bin/sh"
           args: "./build-resources-with-pandoc.sh"
       - name: Archive resources
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         id: artifact-upload-step
         with:
           name: pandoc_resources
           path: ./public/resources/
           retention-days: 1
       - name: Archive Error resources
         if: failure()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: error_resources
           path: ./documents/