Update ApprovalTests to 4.5.2

Author: bording

projects/Unit/Unit.csproj

@@ -11,7 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="ApprovalTests" Version="4.5.1" />
+    <PackageReference Include="ApprovalTests" Version="4.5.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.16.1" />