fix(deps): update dependency autoprefixer to v9.7.4 (#28)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package-lock.json

@@ -34,7 +34,7 @@
     "@babel/preset-react": "7.9.1",
     "@edx/eslint-config": "1.1.5",
     "@svgr/webpack": "5.3.0",
-    "autoprefixer": "9.6.1",
+    "autoprefixer": "9.7.4",
     "babel-eslint": "10.1.0",
     "babel-jest": "24.9.0",
     "babel-loader": "8.1.0",