Update dependency autoprefixer to v9.6.0

plugins/woocommerce-admin/package-lock.json

@@ -3942,16 +3942,29 @@
       "dev": true
     },
     "autoprefixer": {
-      "version": "9.5.1",
-      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.5.1.tgz",
-      "integrity": "sha512-KJSzkStUl3wP0D5sdMlP82Q52JLy5+atf2MHAre48+ckWkXgixmfHyWmA77wFDy6jTHU6mIgXv6hAQ2mf1PjJQ==",
+      "version": "9.6.0",
+      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.6.0.tgz",
+      "integrity": "sha512-kuip9YilBqhirhHEGHaBTZKXL//xxGnzvsD0FtBQa6z+A69qZD6s/BAX9VzDF1i9VKDquTJDQaPLSEhOnL6FvQ==",
       "requires": {
-        "browserslist": "^4.5.4",
-        "caniuse-lite": "^1.0.30000957",
+        "browserslist": "^4.6.1",
+        "caniuse-lite": "^1.0.30000971",
+        "chalk": "^2.4.2",
         "normalize-range": "^0.1.2",
         "num2fraction": "^1.2.2",
-        "postcss": "^7.0.14",
+        "postcss": "^7.0.16",
         "postcss-value-parser": "^3.3.1"
+      },
+      "dependencies": {
+        "browserslist": {
+          "version": "4.6.1",
+          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.6.1.tgz",
+          "integrity": "sha512-1MC18ooMPRG2UuVFJTHFIAkk6mpByJfxCrnUyvSlu/hyQSFHMrlhM02SzNuCV+quTP4CKmqtOMAIjrifrpBJXQ==",
+          "requires": {
+            "caniuse-lite": "^1.0.30000971",
+            "electron-to-chromium": "^1.3.137",
+            "node-releases": "^1.1.21"
+          }
+        }
       }
     },
     "aws-sign2": {

plugins/woocommerce-admin/package.json

@@ -120,7 +120,7 @@
     "@wordpress/jest-preset-default": "4.0.0",
     "@wordpress/postcss-themes": "1.0.4",
     "ast-types": "0.13.1",
-    "autoprefixer": "9.5.1",
+    "autoprefixer": "9.6.0",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "10.0.1",
     "babel-loader": "8.0.6",