Make sure CI/CD includes Python 3.6

## Background
Due to GitHub Action failures, Python 3.6 was excluded from Ci/CD.

## Expected Behavior
Return Python 3.6 to the CI/CD process.

## Error message
```
Version 3.6 was not found in the local cache
Error: Version 3.6 with arch x64 not found
The list of all available versions can be found here: https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json
```