Bump NUnit and Verify.NUnit

Bumps NUnit from 4.3.2 to 4.4.0
Bumps Verify.NUnit from 30.5.0 to 30.7.3

---
updated-dependencies:
- dependency-name: NUnit
  dependency-version: 4.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Verify.NUnit
  dependency-version: 30.7.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tests/NHapi.NUnit.SourceGeneration/NHapi.NUnit.SourceGeneration.csproj

@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="4.3.2" />
+    <PackageReference Include="NUnit" Version="4.4.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="coverlet.collector" Version="6.0.4">
@@ -27,7 +27,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.7" />
-    <PackageReference Include="Verify.NUnit" Version="30.5.0" />
+    <PackageReference Include="Verify.NUnit" Version="30.7.3" />
   </ItemGroup>
 
   <ItemGroup>