Merge pull request #13 from alastairlundy/dependabot/nuget/tests/DotPrimitives.Tests/TUnit-1.18.9

Bump TUnit from 1.12.93 to 1.18.9

Author: alastairlundy

tests/DotPrimitives.Tests/DotPrimitives.Tests.csproj

@@ -13,7 +13,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="TUnit" Version="1.12.93" />
+      <PackageReference Include="TUnit" Version="1.18.9" />
     </ItemGroup>