Fix pip url for Python > 3.6

[krisgesling]

Description

Fixes the url to fetch pip from on versions of Python > 3.6

How to test

Ensure all Github Actions complete showing it installs correctly.

Contributor license agreement signed?

• [x] CLA

[krisgesling]

Can't believe I missed it in PR #3073 - but we were grabbing the Python3.6 pip in both branches of the conditional.

Surprising that all the tests were passing still.

[devops-mycroft]

Voight Kampff Integration Test Succeeded (Results)

[codecov-commenter]

Codecov Report

Merging #3080 (909d89e) into dev (8ee3e8d) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #3080   +/-   ##
=======================================
  Coverage   53.13%   53.13%           
=======================================
  Files         122      122           
  Lines       11159    11159           
=======================================
  Hits         5929     5929           
  Misses       5230     5230           

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[forslund]

Doh!

I assume this worked since python >=3.7 is backwards compatible with older pip code.

It was meant to be

if "${VIRTUALENV_ROOT}/bin/${opt_python}" --version | grep " 3.6" > /dev/null; then

so the output isn't printed.

[forslund]

Best get this in and hide my copy pasta :). The /dev/null fix can be done separately, it's more important that this works as intended.