[dotnet] Update Moq test dependency

[RenderMichael]

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Description

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Enhancement, Tests

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Description

• Updated Moq dependency to version 4.20.72 across multiple files.

• Adjusted dependency configurations in paket.nuget.bzl and paket.dependencies.

• Updated project files to reflect the new Moq version.

• Ensured compatibility with the new Moq version in test projects.

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Changes walkthrough 📝

	Relevant files
Enhancement	paket.nuget.bzl Update `Moq` dependency in `paket.nuget.bzl`                          dotnet/paket.nuget.bzl Updated Moq dependency version from 4.12.0 to 4.20.72. Adjusted dependency details such as sha512 and framework compatibility. +1/-1      workspace.bzl Update `Moq` package reference in `workspace.bzl`                dotnet/workspace.bzl Updated Moq package file reference to version 4.20.72. Adjusted sha256 checksum for the new package. +1/-1      paket.dependencies Update `Moq` version in `paket.dependencies`                          dotnet/paket.dependencies Updated Moq dependency version from 4.12.0 to 4.20.72. +1/-1
Tests	WebDriver.Common.Tests.csproj Update `Moq` version in `WebDriver.Common.Tests.csproj`    dotnet/test/common/WebDriver.Common.Tests.csproj Updated Moq package reference version from 4.13.0 to 4.20.72. +1/-1      WebDriver.Support.Tests.csproj Update `Moq` version in `WebDriver.Support.Tests.csproj`  dotnet/test/support/WebDriver.Support.Tests.csproj Updated Moq package reference version from 4.13.0 to 4.20.72. +1/-1

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[nvborisenko]

Blocked by #15063

[nvborisenko]

What if net 8.0 instead of 7.0 at the top of the file?