Replace reference to python 3.8 with python 3.10 (#22692)
### Description
This PR will set default python to 3.10 except
tools/ci_build/github/azure-pipelines/bigmodels-ci-pipeline.yml. This is
needed because we are no longer using python 3.8
This PR excludes changes for Big Models CI, because it will require
additional changes. Which will be track in
USER STORY 52729
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
