Automatic update of fbcode/onnx to 6b34743d2e361bbc0acb29dd73536478cb92562e (#14637)

update of fbcode/onnx to 6b34743d2e361bbc0acb29dd73536478cb92562e (#14637)

Summary:
Previous import was f461f7aad9987635b4aff108620ed7918f002d19

Included changes:
- **[6b34743](https://github.com/onnx/onnx/commit/6b34743)**: fix the const map initializatoin (#1662) <Lu Fang>
- **[ae80999](https://github.com/onnx/onnx/commit/ae80999)**: Fuse Pad into Conv optimizer (#1580) <vloncar>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/14637

Differential Revision: D13281338

Pulled By: houseroad

fbshipit-source-id: c31429914bf5954fdc85e0c02168836ef47d635c