Bump @remix-run/serve from 1.5.1 to 1.6.3

Bumps [@remix-run/serve](https://github.com/remix-run/remix/tree/HEAD/packages/remix-serve) from 1.5.1 to 1.6.3.
- [Release notes](https://github.com/remix-run/remix/releases)
- [Commits](https://github.com/remix-run/remix/commits/v1.6.3/packages/remix-serve)

---
updated-dependencies:
- dependency-name: "@remix-run/serve"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -15,7 +15,7 @@
   "dependencies": {
     "@remix-run/node": "^1.6.3",
     "@remix-run/react": "^1.4.3",
-    "@remix-run/serve": "^1.4.3",
+    "@remix-run/serve": "^1.6.3",
     "react": "^17.0.2",
     "react-dom": "^17.0.2"
   },