[BUG]: ValidateLINQPadSamples and TearDown Errors

[wesdevpro]

What happened?

Versions

Octokit.net v9.1.2

Relevant log output

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ValidateLINQPadSamples
========================================
Executing sample 01-introducing-octokit.linq...
C:\Users\wes\AppData\Local\Temp\tmp7DE5.tmp(9,36): error CS0012: The type 'ProductHeaderValue' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Net.Http, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
An error occurred when executing task 'ValidateLINQPadSamples'.

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TearDown
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Error: Execution of sample 01-introducing-octokit.linq failed

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