build: Bump NUnit3TestAdapter from 4.3.1 to 5.1.0

---
updated-dependencies:
- dependency-name: NUnit3TestAdapter
  dependency-version: 5.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

APIMatic.Core.Test/APIMatic.Core.Test.csproj

@@ -17,7 +17,7 @@
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
         <PackageReference Include="NUnit" Version="3.13.3" />
-        <PackageReference Include="NUnit3TestAdapter" Version="4.3.1" />
+        <PackageReference Include="NUnit3TestAdapter" Version="5.1.0" />
         <PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
         <PackageReference Include="System.Net.Http.Json" Version="8.0.1" />
     </ItemGroup>