Fix false positive tests in CI for Windows

[jheaff1]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature (please, look at the "Scope of the project" section in the README.md file)
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

The error code of the invocation of "bazel shutdown" was queried to
ascertain the result of "bazel test".

Issue Number: #585

What is the new behavior?

Now, if the invocation of any
bazel command fails, the test_runner.py script will return code 3.

Does this PR introduce a breaking change?

• Yes
• No

Other information

[jheaff1]

It seems that colorama is required in a requirements.lock file on Windows but must be absent on Linux or MacOS. :(

[UebelAndre]

I think the solution here is to find a replacement for sphinx. The dependencies used should use all the same requirements on all platforms or we'd need to implement #260

[UebelAndre]

@jheaff1 I picked up these changes in #598 in case you wanted to collaborate there.

[f0rmiga]

Addressed in #598 and #595.