Bump NunitXml.TestLogger from 3.1.20 to 4.0.254

Bumps [NunitXml.TestLogger](https://github.com/spekt/testlogger) from 3.1.20 to 4.0.254.
- [Release notes](https://github.com/spekt/testlogger/releases)
- [Changelog](https://github.com/spekt/testlogger/blob/master/CHANGELOG.md)
- [Commits](https://github.com/spekt/testlogger/commits/v4.0.254)

---
updated-dependencies:
- dependency-name: NunitXml.TestLogger
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

SynthEHRTests/SynthEHRTests.csproj

@@ -22,7 +22,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="NunitXml.TestLogger" Version="3.1.20" />
+    <PackageReference Include="NunitXml.TestLogger" Version="4.0.254" />
   </ItemGroup>
 
   <ItemGroup>