(deps): Bump Shouldly from 4.2.1 to 4.3.0 in /src

Bumps [Shouldly](https://github.com/shouldly/shouldly) from 4.2.1 to 4.3.0.
- [Release notes](https://github.com/shouldly/shouldly/releases)
- [Changelog](https://github.com/shouldly/shouldly/blob/master/BREAKING%20CHANGES.txt)
- [Commits](shouldly/shouldly@4.2.1...4.3.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

src/Directory.Packages.props

@@ -35,7 +35,7 @@
     <PackageVersion Include="NUnit" Version="4.3.2" />
     <PackageVersion Include="NUnit.Analyzers" Version="4.6.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />
-    <PackageVersion Include="Shouldly" Version="4.2.1" />
+    <PackageVersion Include="Shouldly" Version="4.3.0" />
     <PackageVersion Include="System.Drawing.Common" Version="9.0.1" />
     <PackageVersion Include="System.Security.Cryptography.Xml" Version="9.0.1" />
     <PackageVersion Include="System.Text.Json" Version="9.0.1" />