Bump Moq from 4.18.4 to 4.20.69 (#376)

Bumps [Moq](https://github.com/moq/moq) from 4.18.4 to 4.20.69.
- [Release notes](https://github.com/moq/moq/releases)
- [Changelog](https://github.com/moq/moq/blob/main/CHANGELOG.md)
- [Commits](moq/moq.spikes@v4.18.4...v4.20.69)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj

@@ -12,7 +12,7 @@
     </PackageReference>
     <PackageReference Include="FluentAssertions" Version="6.11.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.2" />
-    <PackageReference Include="Moq" Version="4.18.4" />
+    <PackageReference Include="Moq" Version="4.20.69" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <PrivateAssets>all</PrivateAssets>