Bump the all group with 1 update

Bumps NUnit3TestAdapter from 5.2.0 to 6.0.0

---
updated-dependencies:
- dependency-name: NUnit3TestAdapter
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all
...

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

Author: dependabot[bot]

src/tests/OpenAI.IntegrationTests/OpenAI.IntegrationTests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
     <PackageReference Include="AwesomeAssertions" Version="9.3.0" />
     <PackageReference Include="NUnit" Version="4.4.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.0.0" />
   </ItemGroup>
 
   <ItemGroup Label="GlobalUsings">