build(deps-dev): bump autoprefixer from 10.4.20 to 10.4.21 in /frontend (#4185)

Author: sandhose

frontend/package-lock.json

@@ -64,7 +64,7 @@
     "@types/swagger-ui-dist": "^3.30.5",
     "@vitejs/plugin-react": "^4.3.4",
     "@vitest/coverage-v8": "^3.0.8",
-    "autoprefixer": "^10.4.20",
+    "autoprefixer": "^10.4.21",
     "browserslist-to-esbuild": "^2.1.1",
     "graphql": "^16.10.0",
     "happy-dom": "^17.2.2",