refactor(@angular/build): Pin the supported browsers in the default browserslist config

In order to deterministic list of supported browser for a given version, we now pin the versions in the browserlists config.

This would also address a demand on the fw side angular/angular#54195.

Author: JeanMeche

packages/angular/build/src/utils/supported-browsers.ts

@@ -12,13 +12,14 @@ export function getSupportedBrowsers(
   projectRoot: string,
   logger: { warn(message: string): void },
 ): string[] {
+  // This list should match the last 2 versions of the browsers we support at the release.
   browserslist.defaults = [
-    'last 2 Chrome versions',
-    'last 1 Firefox version',
-    'last 2 Edge major versions',
-    'last 2 Safari major versions',
-    'last 2 iOS major versions',
-    'last 2 Android major versions',
+    'Chrome >= 127',
+    'Edge >= 127',
+    'Firefox >= 129',
+    'Safari >= 16',
+    'ios >= 16',
+    'Android >= 127',
     'Firefox ESR',
   ];
 

packages/schematics/angular/config/files/.browserslistrc.template

@@ -8,10 +8,10 @@
 # You can see what browsers were selected by your queries by running:
 #   npx browserslist
 
-last 2 Chrome versions
-last 1 Firefox version
-last 2 Edge major versions
-last 2 Safari major versions
-last 2 iOS major versions
-last 2 Android major versions
+Chrome >= 127
+Edge >= 127
+Firefox >= 129
+Safari >= 16
+ios >= 16
+Android >= 127 
 Firefox ESR