Bump NSubstitute from 5.1.0 to 5.3.0

Bumps [NSubstitute](https://github.com/nsubstitute/NSubstitute) from 5.1.0 to 5.3.0.
- [Release notes](https://github.com/nsubstitute/NSubstitute/releases)
- [Changelog](https://github.com/nsubstitute/NSubstitute/blob/main/CHANGELOG.md)
- [Commits](nsubstitute/NSubstitute@v5.1.0...v5.3.0)

---
updated-dependencies:
- dependency-name: NSubstitute
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

test/LibYear.Core.Tests/LibYear.Core.Tests.csproj

@@ -7,7 +7,7 @@
 	<ItemGroup>
 		<PackageReference Include="coverlet.collector" Version="6.0.2" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-		<PackageReference Include="NSubstitute" Version="5.1.0" />
+		<PackageReference Include="NSubstitute" Version="5.3.0" />
 		<PackageReference Include="NuGet.Protocol" Version="6.11.1" />
 		<PackageReference Include="System.IO.Abstractions" Version="21.0.29" />
 		<PackageReference Include="xunit" Version="2.9.2" />

test/LibYear.Tests/LibYear.Tests.csproj

@@ -7,7 +7,7 @@
 	<ItemGroup>
 		<PackageReference Include="coverlet.collector" Version="6.0.2" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-		<PackageReference Include="NSubstitute" Version="5.1.0" />
+		<PackageReference Include="NSubstitute" Version="5.3.0" />
 		<PackageReference Include="Spectre.Console.Testing" Version="0.49.1" />
 		<PackageReference Include="xunit" Version="2.9.2" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />