Update PostCSS

Co-authored-by: Tom O'Dwyer <[email protected]>

package.json

@@ -7,14 +7,17 @@
     "build": "vite build",
     "serve": "vite preview"
   },
+  "overrides": {
+    "postcss": "^8.4.33"
+  },
   "dependencies": {
     "@tailwindcss/typography": "^0.4.1",
     "tailwindcss": "^2.2.7"
   },
   "devDependencies": {
     "autoprefixer": "^10.3.1",
     "cssnano": "^5.0.7",
-    "postcss": "^8.4.31",
+    "postcss": "^8.4.33",
     "postcss-color-rgba-fallback": "^4.0.0",
     "purgecss": "^4.0.3",
     "sass": "^1.37.5",