[infra] Change iOS 14 beta bots simulator version to 14.3.

iOS 14.3 is the 14.X runtime in the current beta Xcode version.

Bug: 1158906
Change-Id: I1373c4dc6e6e513ab7252baf7451828926beb386
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612494Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Commit-Queue: Zhaoyang Li <zhaoyangli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840827}

testing/buildbot/test_suites.pyl

@@ -6363,32 +6363,32 @@
     'ios14_beta_simulator_tests': {
       'ios_common_tests': {
         'variants': [
-          'SIM_IPHONE_X_14_2',
+          'SIM_IPHONE_X_14_3',
         ],
       },
       'ios_eg2_tests': {
         'mixins': ['xcode_parallelization'],
         'variants': [
-          'SIM_IPHONE_X_14_2',
-          'SIM_IPHONE_7_14_2',
-          'SIM_IPAD_AIR_3RD_GEN_14_2',
-          'SIM_IPAD_6_GEN_14_2',
+          'SIM_IPHONE_X_14_3',
+          'SIM_IPHONE_7_14_3',
+          'SIM_IPAD_AIR_3RD_GEN_14_3',
+          'SIM_IPAD_6_GEN_14_3',
         ]
       },
       'ios_eg2_cq_tests': {
         'mixins': ['xcode_parallelization'],
         'variants': [
-          'SIM_IPHONE_7_14_2',
-          'SIM_IPHONE_X_14_2',
-          'SIM_IPAD_PRO_2ND_GEN_14_2',
-          'SIM_IPAD_6_GEN_14_2',
+          'SIM_IPHONE_7_14_3',
+          'SIM_IPHONE_X_14_3',
+          'SIM_IPAD_PRO_2ND_GEN_14_3',
+          'SIM_IPAD_6_GEN_14_3',
         ]
       },
       'ios_screen_size_dependent_tests': {
         'variants': [
-          'SIM_IPHONE_6S_PLUS_14_2',
-          'SIM_IPHONE_X_14_2',
-          'SIM_IPAD_AIR_2_14_2',
+          'SIM_IPHONE_6S_PLUS_14_3',
+          'SIM_IPHONE_X_14_3',
+          'SIM_IPAD_AIR_2_14_3',
         ],
       },
     },
@@ -6396,33 +6396,33 @@
     'ios14_sdk_simulator_tests': {
       'ios_common_tests': {
         'variants': [
-          # 14.2 Sims
-          'SIM_IPHONE_6S_14_2',
+          # Latest beta iOS version Sims
+          'SIM_IPHONE_6S_14_3',
         ],
       },
       'ios_eg2_tests': {
         'mixins': ['xcode_parallelization'],
         'variants': [
-          # 14.2 Sims
-          'SIM_IPHONE_7_14_2',
-          'SIM_IPAD_AIR_2_14_2',
-          'SIM_IPHONE_X_14_2',
+          # Latest beta iOS version Sims
+          'SIM_IPHONE_7_14_3',
+          'SIM_IPAD_AIR_2_14_3',
+          'SIM_IPHONE_X_14_3',
         ]
       },
       'ios_eg2_cq_tests': {
         'mixins': ['xcode_parallelization'],
         'variants': [
-          # 14.2 Sims
-          'SIM_IPHONE_X_14_2',
-          'SIM_IPAD_AIR_2_14_2',
-          'SIM_IPAD_PRO_2ND_GEN_14_2',
+          # Latest beta iOS version Sims
+          'SIM_IPHONE_X_14_3',
+          'SIM_IPAD_AIR_2_14_3',
+          'SIM_IPAD_PRO_2ND_GEN_14_3',
         ]
       },
       'ios_screen_size_dependent_tests': {
         'variants': [
-          # 14.2 Sims
-          'SIM_IPHONE_6S_PLUS_14_2',
-          'SIM_IPHONE_6S_14_2',
+          # Latest beta iOS version Sims
+          'SIM_IPHONE_6S_PLUS_14_3',
+          'SIM_IPHONE_6S_14_3',
         ],
       },
     },

testing/buildbot/variants.pyl

@@ -89,43 +89,43 @@
     ],
     'identifier': 'iPad Air 2 14.0'
   },
-  'SIM_IPAD_AIR_2_14_2': {
+  'SIM_IPAD_AIR_2_14_3': {
     'args': [
       '--platform',
       'iPad Air 2',
       '--version',
-      '14.2'
+      '14.3'
     ],
-    'identifier': 'iPad Air 2 14.2'
+    'identifier': 'iPad Air 2 14.3'
   },
-  'SIM_IPAD_AIR_3RD_GEN_14_2': {
+  'SIM_IPAD_AIR_3RD_GEN_14_3': {
     'args': [
       '--platform',
       'iPad Air (3rd generation)',
       '--version',
-      '14.2'
+      '14.3'
     ],
-    'identifier': 'iPad Air (3rd generation) 14.2'
+    'identifier': 'iPad Air (3rd generation) 14.3'
   },
   # In Xcode 12, "iPad Pro (12.9-inch)" requires a generation suffix in
   # "platform" arg.
-  'SIM_IPAD_PRO_2ND_GEN_14_2': {
+  'SIM_IPAD_PRO_2ND_GEN_14_3': {
     'args': [
       '--platform',
       'iPad Pro (12.9-inch) (2nd generation)',
       '--version',
-      '14.2',
+      '14.3',
     ],
-    'identifier': 'iPad Pro (12.9-inch) (2nd generation) 14.2'
+    'identifier': 'iPad Pro (12.9-inch) (2nd generation) 14.3'
   },
-  'SIM_IPAD_6_GEN_14_2': {
+  'SIM_IPAD_6_GEN_14_3': {
     'args': [
       '--platform',
       'iPad (6th generation)',
       '--version',
-      '14.2',
+      '14.3',
     ],
-    'identifier': 'iPad (6th generation) 14.2'
+    'identifier': 'iPad (6th generation) 14.3'
   },
   'SIM_IPHONE_6S_12_4': {
     'args': [
@@ -154,14 +154,14 @@
     ],
     'identifier': 'iPhone 6s 14.0'
   },
-  'SIM_IPHONE_6S_14_2': {
+  'SIM_IPHONE_6S_14_3': {
     'args': [
       '--platform',
       'iPhone 6s',
       '--version',
-      '14.2',
+      '14.3',
     ],
-    'identifier': 'iPhone 6s 14.2'
+    'identifier': 'iPhone 6s 14.3'
   },
   'SIM_IPHONE_6S_PLUS_13_6': {
     'args': [
@@ -190,14 +190,14 @@
     ],
     'identifier': 'iPhone 6s Plus 14.0'
   },
-  'SIM_IPHONE_6S_PLUS_14_2': {
+  'SIM_IPHONE_6S_PLUS_14_3': {
     'args': [
       '--platform',
       'iPhone 6s Plus',
       '--version',
-      '14.2',
+      '14.3',
     ],
-    'identifier': 'iPhone 6s Plus 14.2'
+    'identifier': 'iPhone 6s Plus 14.3'
   },
   'SIM_IPHONE_7_13_6': {
     'args': [
@@ -226,14 +226,14 @@
     ],
     'identifier': 'iPhone 7 14.0'
   },
-  'SIM_IPHONE_7_14_2': {
+  'SIM_IPHONE_7_14_3': {
     'args': [
       '--platform',
       'iPhone 7',
       '--version',
-      '14.2',
+      '14.3',
     ],
-    'identifier': 'iPhone 7 14.2'
+    'identifier': 'iPhone 7 14.3'
   },
   'SIM_IPHONE_SE_1ST_GEN_13_6': {
     'args': [
@@ -298,14 +298,14 @@
     ],
     'identifier': 'iPhone X 14.0'
   },
-  'SIM_IPHONE_X_14_2': {
+  'SIM_IPHONE_X_14_3': {
     'args': [
       '--platform',
       'iPhone X',
       '--version',
-      '14.2',
+      '14.3',
     ],
-    'identifier': 'iPhone X 14.2'
+    'identifier': 'iPhone X 14.3'
   },
   'WEBLAYER_IMPL_SKEW_TESTS_NTH_MILESTONE': {
     'args': [