chore(deps): update nextjs monorepo to v15

Author: renovate[bot]

package.json

@@ -38,7 +38,7 @@
     "graphql-tag": "2.12.6",
     "graphql-ws": "5.11.2",
     "hamburger-react": "2.5.0",
-    "next": "12.3.1",
+    "next": "15.0.4",
     "next-remove-imports": "1.0.7",
     "next-urql": "4.0.0",
     "nookies": "2.5.2",
@@ -88,7 +88,7 @@
     "eslint": "8.24.0",
     "eslint-config-airbnb": "19.0.4",
     "eslint-config-airbnb-typescript": "17.0.0",
-    "eslint-config-next": "12.3.1",
+    "eslint-config-next": "15.0.4",
     "eslint-config-prettier": "8.5.0",
     "eslint-plugin-import": "2.26.0",
     "eslint-plugin-jsx-a11y": "6.6.1",