Add windows-platform testing on GitHub Actions CI

[K-dash]

Please Review! @ryansurf (It's incredibly convenient that sourcery-ai reads the diff and generates the PR description for us!)

Summary by Sourcery

This pull request enhances the GitHub Actions CI workflow by adding support for testing on the Windows platform in addition to the existing Ubuntu platform. It introduces a matrix strategy to run tests on both operating systems, ensures the environment file is prepared correctly, and sets the default shell to bash.

• CI:
  • Added Windows platform testing to the GitHub Actions CI workflow.
  • Updated the CI workflow to use a matrix strategy for testing on both Ubuntu and Windows platforms.
  • Moved the environment file preparation step to a separate action.
  • Modified the shell used in the CI workflow to bash by default.

Fixed https://github.com/ryansurf/cli-surf/issues/73

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request adds support for running tests on both Ubuntu and Windows platforms using GitHub Actions CI. The changes involve modifying the existing CI workflow to include a matrix strategy for different operating systems, preparing the environment file, and ensuring compatibility with both platforms.

File-Level Changes

Files	Changes
.github/workflows/pytest.yml	Enhanced the CI workflow to support testing on both Ubuntu and Windows platforms, including environment setup and conditional steps.

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