test(e2e): Bump nextjs-t3 to next 15 (#19130)

Latest [t3](https://create.t3.gg/) runs on next 15 so this makes more
sense imo.

Closes #19131 (added automatically)

Author: chargome

…s/test-applications/nextjs-t3/.gitignore …est-applications/nextjs-15-t3/.gitignoredev-packages/e2e-tests/test-applications/nextjs-t3/.gitignore renamed to dev-packages/e2e-tests/test-applications/nextjs-15-t3/.gitignore dev-packages/e2e-tests/test-applications/nextjs-t3/.gitignore renamed to dev-packages/e2e-tests/test-applications/nextjs-15-t3/.gitignore

@@ -9,41 +9,40 @@
     "test:prod": "TEST_ENV=production playwright test",
     "test:dev": "TEST_ENV=development playwright test",
     "test:build": "pnpm install && pnpm build",
-    "test:build-canary": "pnpm install && pnpm add next@canary && pnpm add react@beta && pnpm add react-dom@beta && pnpm build",
-    "test:build-latest": "pnpm install && pnpm add next@rc && pnpm add react@beta && pnpm add react-dom@beta && pnpm build",
+    "test:build-canary": "pnpm install && pnpm add next@canary && pnpm add react@rc && pnpm add react-dom@rc && pnpm build",
+    "test:build-latest": "pnpm install && pnpm add next@rc && pnpm add react@rc && pnpm add react-dom@rc && pnpm build",
     "test:assert": "pnpm test:prod && pnpm test:dev"
   },
   "dependencies": {
     "@sentry/nextjs": "latest || *",
-    "@t3-oss/env-nextjs": "^0.10.1",
+    "@t3-oss/env-nextjs": "^0.12.0",
     "@tanstack/react-query": "^5.50.0",
     "@trpc/client": "~11.8.0",
     "@trpc/react-query": "~11.8.0",
     "@trpc/server": "~11.8.0",
-    "next": "14.2.35",
-    "react": "18.3.1",
-    "react-dom": "18.3.1",
+    "next": "^15.5.9",
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0",
     "server-only": "^0.0.1",
     "superjson": "^2.2.1",
-    "zod": "^3.23.3"
+    "zod": "^3.24.2"
   },
   "devDependencies": {
     "@playwright/test": "~1.56.0",
     "@sentry-internal/test-utils": "link:../../../test-utils",
-    "@types/eslint": "^8.56.10",
-    "@types/node": "^18.19.1",
-    "@types/react": "18.3.1",
-    "@types/react-dom": "^18.3.0",
+    "@types/node": "^22.15.21",
+    "@types/react": "^19.1.0",
+    "@types/react-dom": "^19.1.0",
     "@typescript-eslint/eslint-plugin": "^8.1.0",
     "@typescript-eslint/parser": "^8.1.0",
     "eslint": "^8.57.0",
-    "eslint-config-next": "^14.2.4",
+    "eslint-config-next": "^15.5.9",
     "postcss": "^8.4.39",
     "tailwindcss": "^3.4.3",
-    "typescript": "^5.5.3"
+    "typescript": "^5.8.2"
   },
   "ct3aMetadata": {
-    "initVersion": "7.37.0"
+    "initVersion": "7.47.1"
   },
   "volta": {
     "extends": "../../package.json"