build(deps): bump the next group across 1 directory with 2 updates

Bumps the next group with 2 updates in the / directory: [next](https://github.com/vercel/next.js) and [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next).


Updates `next` from 14.2.15 to 15.0.3
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.15...v15.0.3)

Updates `eslint-config-next` from 14.2.15 to 15.0.3
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/commits/v15.0.3/packages/eslint-config-next)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: next
- dependency-name: eslint-config-next
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: next
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -15,7 +15,7 @@
     "@vkontakte/vk-bridge": "^2",
     "@vkontakte/vk-bridge-react": "^1",
     "@vkontakte/vkui": "^7.0.0-beta.0",
-    "next": "^14",
+    "next": "^15",
     "react": "^18",
     "react-dom": "^18",
     "ts-node": "^10"
@@ -27,7 +27,7 @@
     "@types/react": "^18",
     "@types/react-dom": "^18",
     "eslint": "^8",
-    "eslint-config-next": "^14",
+    "eslint-config-next": "^15",
     "eslint-config-prettier": "^9",
     "eslint-plugin-prettier": "^5",
     "husky": "^9",