Bump actions/upload-artifact from 4 to 5

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

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci-pr.yml

@@ -122,7 +122,7 @@ jobs:
 
       - name: Store artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: voc4cat-outbox_${{ env.RUN_DATE }}_run${{ GITHUB.RUN_ID }}
           path: outbox/

.github/workflows/merge.yml

@@ -107,7 +107,7 @@ jobs:
         # This step is not required and may be removed.
         # It may be helpful for trouble shooting.
         if: ${{ always() }}
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4
         with:
           name: voc4cat-pages-dev-content
           path: publish/

.github/workflows/publish.yml

@@ -105,7 +105,7 @@ jobs:
         # This step is not required and may be removed.
         # It may be helpful for troubleshooting.
         if: ${{ always() }}
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4
         with:
           name: voc4cat-pages-release-${{ github.ref_name }}
           path: publish/