Bump torch in /examples/vai_quantizer/tensorflow2x/transformers_bert_qa

Bumps [torch](https://github.com/pytorch/pytorch) from 1.11.0 to 1.13.1.
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](pytorch/pytorch@v1.11.0...v1.13.1)

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

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

examples/vai_quantizer/tensorflow2x/transformers_bert_qa/requirements.txt

@@ -4,5 +4,5 @@ tf2onnx==1.13.0
 protobuf==3.20.1
 tensorflow==2.12.0
 tokenizers==0.12.1
-torch==1.11.0
+torch==1.13.1
 transformers==4.28.1