chore: bump up nextjs version

package.json

@@ -13,13 +13,13 @@
     "@mapbox/rehype-prism": "^0.5.0",
     "@mdx-js/loader": "^1.6.20",
     "@mdx-js/react": "^1.6.22",
-    "@next/mdx": "^10.0.5",
+    "@next/mdx": "10.0.8",
     "@tailwindcss/forms": "^0.2.1",
     "@tailwindcss/typography": "^0.3.1",
     "autoprefixer": "^10.1.0",
     "gray-matter": "^4.0.2",
     "image-size": "0.9.3",
-    "next": "10.0.5",
+    "next": "10.0.8",
     "next-mdx-remote": "^2.0.0",
     "next-seo": "4.17.0",
     "next-themes": "^0.0.10",