chore(deps): update actions/upload-artifact action to v7 (OpenListTeam#407)

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

Author: renovate[bot]

.github/workflows/build_pr.yml

@@ -40,7 +40,7 @@ jobs:
           # OPENLIST_FRONTEND_BUILD_COMPRESS: false
 
       - name: Upload Build Artifacts
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: openlist-frontend-dist-dev-${{ github.sha }}
           path: dist/