chore: ensure the correct next & react versions are installed in templates and core (#7283)

Some package.json's were on older or mismatching Next.js / React
versions. This includes other Next.js packages like @next/env

templates/vercel-postgres/package.json

@@ -18,24 +18,34 @@
     "@payloadcms/storage-vercel-blob": "beta",
     "@vercel/blob": "^0.22.3",
     "cross-env": "^7.0.3",
-    "next": "15.0.0-rc.0",
+    "next": "15.0.0-canary.53",
     "payload": "beta",
-    "react": "19.0.0-rc-38e3b23483-20240529",
-    "react-dom": "19.0.0-rc-38e3b23483-20240529",
+    "react": "19.0.0-rc-6230622a1a-20240610",
+    "react-dom": "19.0.0-rc-6230622a1a-20240610",
     "sharp": "0.32.6"
   },
   "devDependencies": {
     "@types/node": "^20",
-    "@types/react": "^18",
-    "@types/react-dom": "^18",
+    "@types/react": "npm:types-react@19.0.0-rc.0",
+    "@types/react-dom": "npm:types-react-dom@19.0.0-rc.0",
     "autoprefixer": "^10.0.1",
     "eslint": "^8",
-    "eslint-config-next": "14.1.4",
+    "eslint-config-next": "15.0.0-canary.53",
     "postcss": "^8",
     "tailwindcss": "^3.3.0",
-    "typescript": "^5"
+    "typescript": "5.5.3"
   },
   "engines": {
     "node": "^18.20.2 || >=20.9.0"
+  },
+  "pnpm": {
+    "overrides": {
+      "@types/react": "npm:types-react@19.0.0-rc.0",
+      "@types/react-dom": "npm:types-react-dom@19.0.0-rc.0"
+    }
+  },
+  "overrides": {
+    "@types/react": "npm:types-react@19.0.0-rc.0",
+    "@types/react-dom": "npm:types-react-dom@19.0.0-rc.0"
   }
 }

templates/vercel-postgres/src/collections/Media.ts

@@ -1,4 +1,4 @@
-import type { CollectionConfig } from 'payload/types'
+import type { CollectionConfig } from 'payload'
 
 export const Media: CollectionConfig = {
   slug: 'media',

templates/vercel-postgres/src/collections/Users.ts

@@ -1,4 +1,4 @@
-import type { CollectionConfig } from 'payload/types'
+import type { CollectionConfig } from 'payload'
 
 export const Users: CollectionConfig = {
   slug: 'users',

templates/vercel-postgres/src/payload.config.ts

@@ -2,7 +2,7 @@ import { postgresAdapter } from '@payloadcms/db-postgres'
 import { lexicalEditor } from '@payloadcms/richtext-lexical'
 import { vercelBlobStorage } from '@payloadcms/storage-vercel-blob'
 import path from 'path'
-import { buildConfig } from 'payload/config'
+import { buildConfig } from 'payload'
 import sharp from 'sharp'
 import { fileURLToPath } from 'url'