Bump NUnit from 4.2.2 to 4.3.0 in /src

Bumps [NUnit](https://github.com/nunit/nunit) from 4.2.2 to 4.3.0.
- [Release notes](https://github.com/nunit/nunit/releases)
- [Changelog](https://github.com/nunit/nunit/blob/main/CHANGES.md)
- [Commits](nunit/nunit@4.2.2...4.3.0)

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

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

src/Orc.FilterBuilder.Tests/Orc.FilterBuilder.Tests.csproj

@@ -22,7 +22,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="ModuleInit.Fody" Version="2.1.1" PrivateAssets="all" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="NUnit" Version="4.2.2" PrivateAssets="all" />
+    <PackageReference Include="NUnit" Version="4.3.0" PrivateAssets="all" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" PrivateAssets="all" />
     <PackageReference Include="Orc.Automation.Tests" Version="5.0.5" />
     <PackageReference Include="PublicApiGenerator" Version="11.2.0" PrivateAssets="all" />