Bump TUnit from 1.10.0 to 1.11.18 (#101)

---
updated-dependencies:
- dependency-name: TUnit
  dependency-version: 1.11.18
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/Theodicean.SourceGenerators.Tests/Theodicean.SourceGenerators.Tests.csproj

@@ -17,7 +17,7 @@
         </PackageReference>
         <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
-        <PackageReference Include="TUnit" Version="1.10.0" />
+        <PackageReference Include="TUnit" Version="1.11.18" />
         <PackageReference Include="Verify.TUnit" Version="31.9.4" />
     </ItemGroup>