Update cortex_m_virtual_hardware.yml
Update cortex_m_virtual_hardware.yml

* Replace AWS IAM User credentials with OIDC IAM Role. 
* Use avhclient v0.1.x instead pinned v.0.1.1

BUG=collaboration between TFLM and ARM.
tensorflow/tflite-micro,tensorflow/tflite-micro,tensorflow/tflite-micro,tensorflow/tflite-micro