chore(deps): update dependency nunit3testadapter to v5 (#73)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[NUnit3TestAdapter](https://docs.nunit.org/articles/vs-test-adapter/Index.html)
([source](https://redirect.github.com/nunit/nunit3-vs-adapter)) |
`4.2.1` -> `5.0.0` |
[![age](https://developer.mend.io/api/mc/badges/age/nuget/NUnit3TestAdapter/5.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/nuget/NUnit3TestAdapter/5.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/nuget/NUnit3TestAdapter/4.2.1/5.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/NUnit3TestAdapter/4.2.1/5.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

Test plan: CI should pass with updated dependencies. No review required:
this is an automated dependency update PR.

---

### Configuration

📅 **Schedule**: Branch creation - "on the 1st through 7th day of the
month" in timezone America/Los_Angeles, Automerge - At any time (no
schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/sourcegraph/scip-dotnet).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS4xNzYuMiIsInVwZGF0ZWRJblZlciI6IjM5LjE3Ni4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJib3QiXX0=-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

ScipDotnet.Tests/ScipDotnet.Tests.csproj

@@ -11,7 +11,7 @@
         <PackageReference Include="DiffPlex" Version="1.7.1" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
         <PackageReference Include="NUnit" Version="3.13.3" />
-        <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+        <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />
         <PackageReference Include="NUnit.Analyzers" Version="3.3.0" />
         <PackageReference Include="coverlet.collector" Version="3.1.2" />
         <PackageReference Include="TextCopy" Version="6.2.0" />