fix(deps): update nextjs monorepo to v15

package.json

@@ -60,7 +60,7 @@
     "gravatar-url": "3.1.0",
     "intl": "1.2.5",
     "lodash": "4.17.21",
-    "next": "12.3.4",
+    "next": "15.1.2",
     "node-cache": "5.1.2",
     "node-gyp": "9.3.1",
     "node-schedule": "2.1.1",
@@ -141,7 +141,7 @@
     "cypress": "12.7.0",
     "cz-conventional-changelog": "3.3.0",
     "eslint": "8.35.0",
-    "eslint-config-next": "12.3.4",
+    "eslint-config-next": "15.1.2",
     "eslint-config-prettier": "8.6.0",
     "eslint-plugin-formatjs": "4.9.0",
     "eslint-plugin-jsx-a11y": "6.7.1",