chore: use `theia@1.48.3` · arduino/arduino-ide@96c723b

Restore cache failed: Dependencies file is not found in /home/runner/work/arduino-ide/arduino-ide. Supported file pattern: go.sum

Failed to save: Failed to CreateCacheEntry: Received non-retryable error: Failed request: (409) Conflict: cache entry with the same key, version, and scope already exists

Cache not found for keys: node-cache-Linux-x64-yarn-4c7bf649e8c114ae439bf708fdef36412161b5891f2d2d0649e8bebb9f9bbffd