Bump Shouldly from 4.2.1 to 4.3.0 (#1008)

Author: dependabot[bot]

Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="9.0.1" />
     <PackageVersion Include="Microsoft.IdentityModel.Protocols.OpenIdConnect" Version="8.0.0" />
     <PackageVersion Include="NSubstitute" Version="5.3.0" />
-    <PackageVersion Include="Shouldly" Version="4.2.1" />
+    <PackageVersion Include="Shouldly" Version="4.3.0" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
     <PackageVersion Include="System.Text.Encodings.Web" Version="9.0.0" />
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />