💥 Move pnpm to devDependencies (#2324)

Author: KATO-Hiro

package.json

@@ -53,6 +53,7 @@
     "jsdom": "26.1.0",
     "lint-staged": "16.1.2",
     "nock": "14.0.5",
+    "pnpm": "10.13.1",
     "prettier": "3.6.2",
     "prettier-plugin-svelte": "3.4.0",
     "prettier-plugin-tailwindcss": "0.6.14",
@@ -87,7 +88,6 @@
     "lucide-svelte": "^0.525.0",
     "p-queue": "^8.1.0",
     "playwright": "1.54.1",
-    "pnpm": "10.13.1",
     "prisma-erd-generator": "2.0.4",
     "svelte-eslint-parser": "1.2.0",
     "tailwind-merge": "2.6.0",