minor correction to drive CI base coverage

[sarnold]

• use the right tox env cmd for single python version

[sarnold]

Yay. One I've never seen before; possibly transient, more likely an org/visibility setting? Note this runs fine in another org. I might push another test commit or two...

Since a didn't do a "clean" fork of this repo first, it looks like a known issue

Lemme try this again from an actual fork...

Run marocchino/[email protected]
  with:
    header: coverage
    recreate: true
    path: code-coverage-results.md
    append: false
    delete: false
    GITHUB_TOKEN: ***
  env:
    PLATFORM: ubuntu-20.04
    PYTHON: 3.9
    PYTHONIOENCODING: utf-8
    PIP_DOWNLOAD_CACHE: /home/runner/work/pystache/pystache/../.pip_download_cache
    pythonLocation: /opt/hostedtoolcache/Python/3.9.8/x64
    LD_LIBRARY_PATH: /opt/hostedtoolcache/Python/3.9.8/x64/lib
Error: Resource not accessible by integration