Update all of nextjs to version 15.5.2

Author: depfu[bot]

package.json

@@ -37,7 +37,7 @@
     "katex": "^0.13.24",
     "livecodes": "0.7.2",
     "marked": "^4.0.17",
-    "next": "^12.1.0",
+    "next": "^15.5.2",
     "next-i18next": "^8.10.0",
     "next-query-params": "^2.2.1",
     "nextjs-progressbar": "^0.0.13",
@@ -76,7 +76,7 @@
     "babel-plugin-module-resolver": "^4.1.0",
     "eslint": "<8.0.0",
     "eslint-config-airbnb": "^18.2.1",
-    "eslint-config-next": "^12.1.6",
+    "eslint-config-next": "^15.5.2",
     "eslint-config-prettier": "^8.5.0",
     "eslint-import-resolver-babel-module": "^5.3.1",
     "eslint-plugin-import": "^2.26.0",