update iOS FTL model and version (#660)

* update readme

* update iOS FTL model and version

---------

Co-authored-by: Cynthia Jiang <cynthiajiang@google.com>

Author: cynthiajoan

scripts/gha/print_matrix_configuration.py

@@ -94,9 +94,9 @@
   "emulator_target": {"platform": ANDROID, "type": "virtual", "image": "system-images;android-28;google_apis;x86_64"},
   "emulator_latest": {"platform": ANDROID, "type": "virtual", "image": "system-images;android-30;google_apis;x86_64"},
   "emulator_32bit": {"platform": ANDROID, "type": "virtual", "image": "system-images;android-30;google_apis;x86"},
-  "ios_min": {"platform": IOS, "type": "real", "device": "model=iphonexr,version=13.2"},
-  "ios_target": {"platform": IOS, "type": "real", "device": "model=iphone8,version=13.6"},
-  "ios_latest": {"platform": IOS, "type": "real", "device": "model=iphone11pro,version=14.7"},
+  "ios_min": {"platform": IOS, "type": "real", "device": "model=iphone8,version=14.7"},
+  "ios_target": {"platform": IOS, "type": "real", "device": "model=iphone13pro,version=15.7"},
+  "ios_latest": {"platform": IOS, "type": "real", "device": "model=iphone11pro,version=16.3"},
   "simulator_min": {"platform": IOS, "type": "virtual", "name": "iPhone 6", "version": "11.4"},
   "simulator_target": {"platform": IOS, "type": "virtual", "name": "iPhone 12", "version": "14.5"},
   "simulator_latest": {"platform": IOS, "type": "virtual", "name": "iPhone 12", "version": "16.0"},