Update dependency autoprefixer to v10.4.21

Author: renovate[bot]

billing/google/package.json

@@ -72,7 +72,7 @@
     "@storybook/react": "6.4.22",
     "@storybook/storybook-deployer": "2.8.16",
     "acorn": "8.8.1",
-    "autoprefixer": "10.4.13",
+    "autoprefixer": "10.4.21",
     "babel-jest": "28.0.3",
     "babel-loader": "8.3.0",
     "babel-preset-minify": "0.6.0-alpha.9",