Reintroduce Minimum OS Version Requirements to Readme

[iambmelt]

Reintroducing minimum version indicators that were [mistakenly?] removed in #2080

Proposed changes

Describe what this PR is trying to do.

Type of change

• Feature work
• Bug fix
• [x ] Documentation
• Engineering change
• Test
• Logging/Telemetry

Risk

• High – Errors could cause MAJOR regression of many scenarios. (Example: new large features or high level infrastructure changes)
• Medium – Errors could cause regression of 1 or more scenarios. (Example: somewhat complex bug fixes, small new features)
• [x ] Small – No issues are expected. (Example: Very small bug fixes, string changes, or configuration settings changes)

Additional information