[Tests] Remove Moq as a dependency

This is a test-only change. I don't want to risk an upgrade and harvesting PII from anyone who works on our project, so I'm removing Moq immediately.

See https://github.com/moq/moq/issues/1372 for details/discussion.

Directory.Packages.props

@@ -15,10 +15,9 @@
     <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="1.1.1" />
-    <PackageVersion Include="Moq" Version="4.17.2" />
     <PackageVersion Include="Nerdbank.GitVersioning" Version="3.4.255" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.1" />
-    <PackageVersion Include="NSubstitute" Version="4.3.0" />
+    <PackageVersion Include="NSubstitute" Version="5.0.0" />
     <PackageVersion Include="StackExchange.Redis" Version="2.6.96" />
     <!-- For binding redirect testing, main package gets this transitively -->
     <PackageVersion Include="System.IO.Pipelines" Version="5.0.1" />

tests/StackExchange.Redis.Tests/KeyPrefixedBatchTests.cs

@@ -1,26 +1,26 @@
-using Moq;
-using StackExchange.Redis.KeyspaceIsolation;
+using StackExchange.Redis.KeyspaceIsolation;
 using System.Text;
+using NSubstitute;
 using Xunit;
 
 namespace StackExchange.Redis.Tests;
 
-[Collection(nameof(MoqDependentCollection))]
+[Collection(nameof(SubstituteDependentCollection))]
 public sealed class KeyPrefixedBatchTests
 {
-    private readonly Mock<IBatch> mock;
+    private readonly IBatch mock;
     private readonly KeyPrefixedBatch prefixed;
 
     public KeyPrefixedBatchTests()
     {
-        mock = new Mock<IBatch>();
-        prefixed = new KeyPrefixedBatch(mock.Object, Encoding.UTF8.GetBytes("prefix:"));
+        mock = Substitute.For<IBatch>();
+        prefixed = new KeyPrefixedBatch(mock, Encoding.UTF8.GetBytes("prefix:"));
     }
 
     [Fact]
     public void Execute()
     {
         prefixed.Execute();
-        mock.Verify(_ => _.Execute(), Times.Once());
+        mock.Received(1).Execute();
     }
 }