Update perf/time on latest iPhone 14 Pro

Author: julien-c

README.md

@@ -14,7 +14,7 @@ For faster inference, we use a very fast scheduler: [DPM-Solver++](https://githu
 - macOS Ventura 13.1, iOS/iPadOS 16.2, Xcode 14.2.
 - Performance (after initial generation, which is slower)
   * ~10s in macOS on MacBook Pro M1 Max (64 GB).
-  * ~2 minutes in iPhone 13 Pro.
+  * ~1 min 15s in iPhone 14 Pro.
 
 ## Limitations