fix(deps): update dependency postcss to v8.4.47

Author: renovate[bot]

package-lock.json

@@ -106,7 +106,7 @@
 		"lodash.snakecase": "^4.1.1",
 		"mini-css-extract-plugin": "1.6.2",
 		"parse5": "7.1.2",
-		"postcss": "8.4.40",
+		"postcss": "8.4.47",
 		"postcss-custom-media": "10.0.8",
 		"postcss-loader": "7.3.4",
 		"postcss-rtlcss": "5.1.2",