chore(deps): update dependency snapshooter.nunit to v0.14.1

Also remove workaround for Snapshooter/NUnit 4/.NET 4.6.2 compat issue

tests/TestableIO.System.IO.Abstractions.Wrappers.Tests/TestableIO.System.IO.Abstractions.Wrappers.Tests.csproj

@@ -22,22 +22,12 @@
     <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit.Analyzers" Version="3.10.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-    <PackageReference Include="Snapshooter.NUnit" Version="0.14.0" />
+    <PackageReference Include="Snapshooter.NUnit" Version="0.14.1" />
   </ItemGroup>
   <PropertyGroup>
     <!--
       Allow deprecated binary formatter functionality on .NET 8 so that we can test it
     -->
     <EnableUnsafeBinaryFormatterSerialization Condition="'$(TargetFramework)' == 'net8.0'">true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
-  <!--
-    Snapshooter is currently broken when referencing NUnit 4 from a .NET 4.6.2 project.
-    The following blocks work around this by referencing NUnit 3 in that case.
-  -->
-  <PropertyGroup>
-    <_Net462NUnitVersion>3.14.0</_Net462NUnitVersion>
-  </PropertyGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
-    <PackageReference Update="NUnit" Version="$(_Net462NUnitVersion)" />
-  </ItemGroup>
 </Project>