feat(@angular-devkit/build-angular): update autoprefixer (#12785)

Author: alan-agius4

packages/angular_devkit/build_angular/package.json

@@ -12,7 +12,7 @@
     "@angular-devkit/core": "0.0.0",
     "@ngtools/webpack": "0.0.0",
     "ajv": "6.5.3",
-    "autoprefixer": "9.1.5",
+    "autoprefixer": "9.3.1",
     "circular-dependency-plugin": "5.0.2",
     "clean-css": "4.2.1",
     "copy-webpack-plugin": "4.5.4",

yarn.lock

@@ -1163,19 +1163,7 @@ atob@^2.1.1:
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
-autoprefixer@9.1.5:
-  version "9.1.5"
-  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.1.5.tgz#8675fd8d1c0d43069f3b19a2c316f3524e4f6671"
-  integrity sha512-kk4Zb6RUc58ld7gdosERHMF3DzIYJc2fp5sX46qEsGXQQy5bXsu8qyLjoxuY1NuQ/cJuCYnx99BfjwnRggrYIw==
-  dependencies:
-    browserslist "^4.1.0"
-    caniuse-lite "^1.0.30000884"
-    normalize-range "^0.1.2"
-    num2fraction "^1.2.2"
-    postcss "^7.0.2"
-    postcss-value-parser "^3.2.3"
-
-autoprefixer@^9.0.0:
+autoprefixer@9.3.1, autoprefixer@^9.0.0:
   version "9.3.1"
   resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.3.1.tgz#71b622174de2b783d5fd99f9ad617b7a3c78443e"
   integrity sha512-DY9gOh8z3tnCbJ13JIWaeQsoYncTGdsrgCceBaQSIL4nvdrLxgbRSBPevg2XbX7u4QCSfLheSJEEIUUSlkbx6Q==
@@ -1587,7 +1575,7 @@ browserify-zlib@^0.2.0:
   dependencies:
     pako "~1.0.5"
 
-browserslist@^4.0.0, browserslist@^4.1.0, browserslist@^4.3.3:
+browserslist@^4.0.0, browserslist@^4.3.3:
   version "4.3.4"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.3.4.tgz#4477b737db6a1b07077275b24791e680d4300425"
   integrity sha512-u5iz+ijIMUlmV8blX82VGFrB9ecnUg5qEt55CMZ/YJEhha+d8qpBfOFuutJ6F/VKRXjZoD33b6uvarpPxcl3RA==
@@ -1817,7 +1805,7 @@ camelcase@^4.0.0, camelcase@^4.1.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
   integrity sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=
 
-caniuse-lite@^1.0.30000884, caniuse-lite@^1.0.30000898, caniuse-lite@^1.0.30000899:
+caniuse-lite@^1.0.30000898, caniuse-lite@^1.0.30000899:
   version "1.0.30000903"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000903.tgz#86d46227759279b3db345ddbe778335dbba9e858"
   integrity sha512-T1XVJEpGCoaq7MDw7/6hCdYUukmSaS+1l/OQJkLtw7Cr2+/+d67tNGKEbyiqf7Ck8x6EhNFUxjYFXXka0N/w5g==