Bump serve from 9.4.0 to 11.3.2 in /reactive-ngrx/src/main/ngrx

Bumps [serve](https://github.com/zeit/serve) from 9.4.0 to 11.3.2.
- [Release notes](https://github.com/zeit/serve/releases)
- [Commits](vercel/serve@9.4.0...11.3.2)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

reactive-ngrx/src/main/ngrx/package.json

@@ -33,7 +33,7 @@
     "@angular/compiler-cli": "5.1.0",
     "@types/node": "8.0.57",
     "codelyzer": "4.0.1",
-    "serve": "9.4.0",
+    "serve": "11.3.2",
     "ts-node": "3.3.0",
     "tslint": "5.8.0",
     "typescript": ">=2.4.2 <2.5.0"