Fixing readme test

Author: distantcam

src/AutoCtor.Tests/ExampleTests.cs

@@ -128,12 +128,14 @@ public static IEnumerable<Func<CodeFileTheoryData>> GetExamples()
             };
         }
 
+#if ROSLYN_4_4
         foreach (var readmeExample in GetExamplesFiles("ReadmeExamples"))
         {
             yield return () => new CodeFileTheoryData(readmeExample) with
             {
                 IgnoredCompileDiagnostics = ["CS0414", "CS0169"] // Ignore unused fields
             };
         }
+#endif
     }
 }