Bump onnx in /onnxruntime/python/tools/transformers/models/phi2

Bumps [onnx](https://github.com/onnx/onnx) from 1.16.1 to 1.17.0.
- [Release notes](https://github.com/onnx/onnx/releases)
- [Changelog](https://github.com/onnx/onnx/blob/main/docs/Changelog-ml.md)
- [Commits](https://github.com/onnx/onnx/compare/v1.16.1...v1.17.0)

---
updated-dependencies:
- dependency-name: onnx
  dependency-type: direct:production
...

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

onnxruntime/python/tools/transformers/models/phi2/requirements.txt

@@ -1,3 +1,3 @@
-onnx==1.16.1
+onnx==1.17.0
 transformers>=4.36.2
 onnxscript>=0.1.0.dev20240126