Loosen platform regex to allow 64 or 32 bit mingw

[clintoncwolfe]

Signed-off-by: Clinton Wolfe clintoncwolfe@gmail.com

Causing test failures on InSpec here (not our only problem) - https://buildkite.com/chef-oss/inspec-inspec-main-verify/builds/4314#4c315e88-e205-42dc-8536-22aae8fef418

Description

Related Issue

Fixes #233

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• I have read the CONTRIBUTING document.
• I have run the pre-merge tests locally and they pass.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• All commits have been signed-off for the Developer Certificate of Origin.

[PrajaktaPurohit]

LGTM, do we need to continue testing on ruby 2.4? Looks like there is a failure there.