Update dependency NUnit to 4.5.0

Author: renovate[bot]

src/Directory.Packages.props

@@ -349,7 +349,7 @@
 	<ItemGroup>
 		<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.0">
 		</PackageVersion>
-		<PackageVersion Include="NUnit" Version="4.3.2">
+		<PackageVersion Include="NUnit" Version="4.5.0">
 		</PackageVersion>
 		<PackageVersion Include="NUnit.Analyzers" Version="4.8.1">
 		</PackageVersion>