Move to dev deps

Author: josevalim

assets/package.json

@@ -29,6 +29,7 @@
   "devDependencies": {
     "@fontsource/inconsolata": "^4.5.9",
     "@fontsource/lato": "^4.5.10",
+    "@swup/a11y-plugin": "^5.0.0",
     "esbuild": "^0.16.16",
     "eslint": "^8.31.0",
     "eslint-config-standard": "^17.0.0",
@@ -46,10 +47,7 @@
     "lodash.throttle": "^4.1.1",
     "lunr": "^2.3.8",
     "mocha": "^10.2.0",
-    "normalize.css": "^8.0.1"
-  },
-  "dependencies": {
-    "@swup/a11y-plugin": "^5.0.0",
+    "normalize.css": "^8.0.1",
     "swup": "^4.8.1"
   }
 }