C#: Fix Binlog API breaking change.

Author: michaelnebel

csharp/extractor/Semmle.Extraction.CSharp/Extractor/Extractor.cs

@@ -182,7 +182,7 @@ static bool filter(CompilerCall compilerCall)
                     var compilerCall = compilationData.CompilerCall;
                     var diagnosticName = compilerCall.GetDiagnosticName();
                     logger.LogInfo($"  Processing compilation {diagnosticName} at {compilerCall.ProjectDirectory}");
-                    var compilerArgs = compilerCall.GetArguments();
+                    var compilerArgs = reader.ReadArguments(compilerCall);
 
                     var compilationIdentifierPath = string.Empty;
                     try