Update dependency next to v15 (#148)

* Update dependency next to v15

* Update ESLint and stylelint

* Add import type

* Update Playwright types

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Lukas Prochazka <[email protected]>

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/building-your-application/configuring/typescript for more information.

package.json

@@ -9,7 +9,7 @@
     "start": "next start"
   },
   "dependencies": {
-    "next": "14.2.12",
+    "next": "15.0.3",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "sass": "1.79.1",
@@ -24,11 +24,11 @@
     "@types/sass": "1.45.0",
     "@types/sharp": "0.32.0",
     "eslint": "9.10.0",
-    "eslint-config-upleveled": "8.7.0",
+    "eslint-config-upleveled": "8.11.3",
     "postcss": "8.4.47",
     "prettier": "^3.2.5",
     "stylelint": "16.9.0",
-    "stylelint-config-upleveled": "1.1.3",
+    "stylelint-config-upleveled": "1.1.5",
     "typescript": "5.6.2"
   },
   "packageManager": "[email protected]"

pages/_app.tsx

@@ -1,5 +1,5 @@
 import '../styles/app.scss';
-import { AppProps } from 'next/app';
+import type { AppProps } from 'next/app';
 
 // This default export is required in a new `pages/_app.js` file.
 export default function MyApp({ Component, pageProps }: AppProps) {

playwright.config.ts

@@ -1,4 +1,4 @@
-import { PlaywrightTestConfig } from '@playwright/test';
+import type { PlaywrightTestConfig } from '@playwright/test';
 
 // Config file docs: https://playwright.dev/docs/test-configuration
 const config: PlaywrightTestConfig = {