Update dependency postcss-preset-env to v7.7.1

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "npm-run-all": "4.1.5",
     "postcss": "8.4.5",
     "postcss-flexbugs-fixes": "5.0.2",
-    "postcss-preset-env": "7.2.0",
+    "postcss-preset-env": "7.7.1",
     "prettier": "2.5.1",
     "tailwindcss": "3.0.11",
     "typescript": "4.5.4"