security: add patched next devDependency for nextjs-webpack-plugin

Pins dev resolution to next ^14.2.25 for the middleware authorization
bypass fix (GHSA-f82v-jwr5-mffw) while keeping peer range 14.x || 15.x.

Made-with: Cursor

Author: thomasrockhu-codecov

packages/nextjs-webpack-plugin/package.json

@@ -57,6 +57,7 @@
     "@vitest/coverage-v8": "^2.1.9",
     "codecovProdRollupPlugin": "npm:@codecov/rollup-plugin@1.5.0",
     "msw": "^2.7.0",
+    "next": "^14.2.25",
     "ts-node": "^10.9.2",
     "typedoc": "^0.27.5",
     "typescript": "^5.3.3",