update to React 19 stable and Next 15.1

Author: mattcarrollcode

next-env.d.ts

@@ -2,4 +2,4 @@
 /// <reference types="next/image-types/global" />
 
 // NOTE: This file should not be edited
-// see https://nextjs.org/docs/basic-features/typescript for more information.
+// see https://nextjs.org/docs/pages/api-reference/config/typescript for more information.

package.json

@@ -34,12 +34,12 @@
     "date-fns": "^2.16.1",
     "debounce": "^1.2.1",
     "github-slugger": "^1.3.0",
-    "next": "15.0.0-canary.46",
+    "next": "15.1.0",
     "next-remote-watch": "^1.0.0",
     "parse-numeric-range": "^1.2.0",
-    "react": "^19.0.0-rc-8971381549-20240625",
+    "react": "^19.0.0",
     "react-collapsed": "4.0.4",
-    "react-dom": "^19.0.0-rc-8971381549-20240625",
+    "react-dom": "^19.0.0",
     "remark-frontmatter": "^4.0.1",
     "remark-gfm": "^3.0.1"
   },