fix(nextjs): bumped to eslintConfigNextVersion to v15 (#30537)

Closes #30536

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## Current Behavior
The current version of eslint-config-next (v14.2.16) has peer dependency
conflicts with the latest versions of ESLint (v9.x). This issue causes
npm install to fail in projects using eslint-config-next.

## Expected Behavior
`npm install` should succeed without dependency conflicts.

## Related Issue(s)


Fixes #30536

---------

Co-authored-by: Nicholas Cunningham <ndcunningham@gmail.com>

docs/generated/manifests/nx-api.json

@@ -3094,6 +3094,16 @@
       }
     },
     "migrations": {
+      "/nx-api/next/migrations/20.7.1-beta.0-package-updates": {
+        "description": "",
+        "file": "generated/packages/next/migrations/20.7.1-beta.0-package-updates.json",
+        "hidden": false,
+        "name": "20.7.1-beta.0-package-updates",
+        "version": "20.7.1-beta.0",
+        "originalFilePath": "/packages/next",
+        "path": "/nx-api/next/migrations/20.7.1-beta.0-package-updates",
+        "type": "migration"
+      },
       "/nx-api/next/migrations/19.0.3-package-updates": {
         "description": "",
         "file": "generated/packages/next/migrations/19.0.3-package-updates.json",

docs/generated/packages-metadata.json

@@ -3073,6 +3073,16 @@
       }
     ],
     "migrations": [
+      {
+        "description": "",
+        "file": "generated/packages/next/migrations/20.7.1-beta.0-package-updates.json",
+        "hidden": false,
+        "name": "20.7.1-beta.0-package-updates",
+        "version": "20.7.1-beta.0",
+        "originalFilePath": "/packages/next",
+        "path": "next/migrations/20.7.1-beta.0-package-updates",
+        "type": "migration"
+      },
       {
         "description": "",
         "file": "generated/packages/next/migrations/19.0.3-package-updates.json",

docs/generated/packages/next/migrations/20.7.1-beta.0-package-updates.json

@@ -0,0 +1,17 @@
+{
+  "name": "20.7.1-beta.0-package-updates",
+  "version": "20.7.1-beta.0",
+  "packages": {
+    "eslint-config-next": {
+      "version": "^15.2.4",
+      "alwaysAddToPackageJson": false
+    }
+  },
+  "aliases": [],
+  "description": "",
+  "hidden": false,
+  "implementation": "",
+  "path": "/packages/next",
+  "schema": null,
+  "type": "migration"
+}

packages/next/migrations.json

@@ -38,6 +38,15 @@
           "alwaysAddToPackageJson": false
         }
       }
+    },
+    "20.7.1-beta.0": {
+      "version": "20.7.1-beta.0",
+      "packages": {
+        "eslint-config-next": {
+          "version": "^15.2.4",
+          "alwaysAddToPackageJson": false
+        }
+      }
     }
   }
 }

packages/next/src/utils/versions.ts

@@ -2,7 +2,7 @@ export const nxVersion = require('../../package.json').version;
 
 export const nextVersion = '~15.1.4';
 export const next14Version = '~14.2.16';
-export const eslintConfigNextVersion = '14.2.16';
+export const eslintConfigNextVersion = '^15.2.4';
 export const sassVersion = '1.62.1';
 export const lessLoader = '11.1.0';
 export const emotionServerVersion = '11.11.0';