Update nextjs monorepo to v12.3.0 (#48)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

example/package.json

@@ -13,7 +13,7 @@
     "@vanilla-extract/css": "1.9.0",
     "@vanilla-extract/dynamic": "2.0.2",
     "@vanilla-extract/next-plugin": "2.0.2",
-    "next": "12.2.5",
+    "next": "12.3.0",
     "rainbow-sprinkles": "workspace:*",
     "react": "18.2.0",
     "react-dom": "18.2.0",
@@ -24,7 +24,7 @@
     "@types/react": "18.0.18",
     "@types/react-dom": "18.0.6",
     "eslint": "8.23.0",
-    "eslint-config-next": "12.2.5",
+    "eslint-config-next": "12.3.0",
     "next-transpile-modules": "9.0.0",
     "polished": "4.2.2",
     "typescript": "4.8.2"