Bump NUnit from 4.4.0 to 4.5.0

---
updated-dependencies:
- dependency-name: NUnit
  dependency-version: 4.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

AsyncTaskOrchestratorGenerator.UnitTests/AsyncTaskOrchestratorGenerator.UnitTests.csproj

@@ -14,7 +14,7 @@
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
-    <PackageReference Include="NUnit" Version="4.4.0" />
+    <PackageReference Include="NUnit" Version="4.5.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.11.2">
       <PrivateAssets>all</PrivateAssets>