deps: update dependency autoprefixer to v10.3.4 (#775)

Author: renovate[bot]

package-lock.json

@@ -54,7 +54,7 @@
     "@types/sass": "1.16.1",
     "@typescript-eslint/eslint-plugin": "4.30.0",
     "@typescript-eslint/parser": "4.30.0",
-    "autoprefixer": "10.3.3",
+    "autoprefixer": "10.3.4",
     "chokidar": "3.5.2",
     "codecov": "3.8.3",
     "docsify-cli": "4.4.3",