.browserslistrc: remove Android and make Safari/iOS 12 the minimum (#33399)

.browserslistrc

@@ -6,7 +6,6 @@ not dead
 Chrome >= 60
 Firefox >= 60
 Firefox ESR
-iOS >= 10
-Safari >= 10
-Android >= 6
+iOS >= 12
+Safari >= 12
 not Explorer <= 11

.bundlewatch.config.json

@@ -34,27 +34,27 @@
     },
     {
       "path": "./dist/js/bootstrap.bundle.js",
-      "maxSize": "43 kB"
+      "maxSize": "41 kB"
     },
     {
       "path": "./dist/js/bootstrap.bundle.min.js",
-      "maxSize": "22.75 kB"
+      "maxSize": "22 kB"
     },
     {
       "path": "./dist/js/bootstrap.esm.js",
-      "maxSize": "28.5 kB"
+      "maxSize": "27 kB"
     },
     {
       "path": "./dist/js/bootstrap.esm.min.js",
-      "maxSize": "19 kB"
+      "maxSize": "18 kB"
     },
     {
       "path": "./dist/js/bootstrap.js",
-      "maxSize": "29 kB"
+      "maxSize": "27 kB"
     },
     {
       "path": "./dist/js/bootstrap.min.js",
-      "maxSize": "16.5 kB"
+      "maxSize": "15.75 kB"
     }
   ],
   "ci": {

js/tests/browsers.js

@@ -40,7 +40,7 @@ const browsers = {
   iphone7: {
     base: 'BrowserStack',
     os: 'ios',
-    os_version: '10.0',
+    os_version: '12.0',
     device: 'iPhone 7',
     real_mobile: true
   },