(deps): Bump NUnit3TestAdapter from 4.3.0 to 4.3.1

Bumps [NUnit3TestAdapter](https://github.com/nunit/nunit3-vs-adapter) from 4.3.0 to 4.3.1.
- [Release notes](https://github.com/nunit/nunit3-vs-adapter/releases)
- [Commits](nunit/nunit3-vs-adapter@V4.3.0...V4.3.1)

---
updated-dependencies:
- dependency-name: NUnit3TestAdapter
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -26,7 +26,7 @@
         <PackageVersion Include="MSBuild.ProjectCreation" Version="8.3.0"/>
         <PackageVersion Include="NSubstitute" Version="4.4.0"/>
         <PackageVersion Include="NUnit" Version="3.13.3"/>
-        <PackageVersion Include="NUnit3TestAdapter" Version="4.3.0"/>
+        <PackageVersion Include="NUnit3TestAdapter" Version="4.3.1"/>
         <PackageVersion Include="JunitXml.TestLogger" Version="3.0.114"/>
         <PackageVersion Include="Shouldly" Version="4.1.0"/>