Remove support for .netcoreapp3.1

[gep13]

Detailed Description

We should switch to using only supported target frameworks.

Context

.netcoreapp3.1 ran out of support in December 2022, so we should remove usage of it.

Possible Implementation

Remove the TargetFrameworks that target .netcoreapp3.1.

Your Environment

N/A

[gittools-bot]

:tada: This issue has been resolved in version 0.15.0 :tada:

The release is available on:

• GitHub Release
• NuGet Package
• Chocolatey Package
• .Net Global Tool

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