Bump the github-actions group in /.github/workflows/stash with 1 update

Bumps the github-actions group in /.github/workflows/stash with 1 update: [actions/upload-artifact](https://github.com/actions/upload-artifact).

- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

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

.github/workflows/stash/action.yml

@@ -17,7 +17,7 @@ runs:
       shell: bash
 
     - name: Upload stash
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: ${{ inputs.name }}
         path: ${{ runner.temp }}/${{ inputs.name }}.tar.zst