fix(deps): update dependency next to v14 [security]

Author: renovate[bot]

package.json

@@ -28,7 +28,7 @@
     "image-size": "1.0.0",
     "katex": "0.15.1",
     "luxon": "2.1.1",
-    "next": "12.1.0",
+    "next": "14.2.7",
     "next-mdx-remote": "3.0.8",
     "next-seo": "4.26.0",
     "postcss": "8.4.3",