docs: mentioned Node.js, TypeScript versions

Author: JoshuaKGoldberg

README.md

@@ -51,6 +51,11 @@ This is a performance issue and we are investigating it as a critical bug for v8
 ┴───────┴──────────────────────┴──────────────────────┴──────────────────────┴──────────────────────┘
 ```
 
+## Notes
+
+- Example measurements taken on an M1 Max Mac Studio with Node.js 22.4.1
+- These issues occur with TypeScript 5.4.5 and 5.5.3
+
 ## Contributors
 
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