Bump Moq from 4.18.4 to 4.20.70

Bumps [Moq](https://github.com/moq/moq) from 4.18.4 to 4.20.70.
- [Release notes](https://github.com/moq/moq/releases)
- [Changelog](https://github.com/devlooped/moq/blob/main/CHANGELOG.md)
- [Commits](moq/moq.spikes@v4.18.4...v4.20.70)

---
updated-dependencies:
- dependency-name: Moq
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

BitPayUnitTest/BitPayUnitTest.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="Moq" Version="4.18.4" />
+    <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>