Update jest-junit-parser.ts

Added fix from dorny#506

src/parsers/jest-junit/jest-junit-parser.ts

@@ -85,7 +85,7 @@ export class JestJunitParser implements TestParser {
       return undefined
     }
 
-    const details = tc.failure[0]
+    const details = tc.failure[0] || tc.failure[0]._
     let path
     let line