fix: upgrade serve from 11.0.0 to 11.3.0 (#409)

Snyk has created this PR to upgrade serve from 11.0.0 to 11.3.0.

See this package in NPM:
https://www.npmjs.com/package/serve

See this project in Snyk:
https://app.snyk.io/org/nodeshift-agg/project/0569fa2f-39b2-4a6a-9bdc-8ac878d28a88?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -58,7 +58,7 @@
     "documentation": "^12.1.4",
     "nyc": "~15.0.0",
     "opener": "1.5.1",
-    "serve": "^11.0.0",
+    "serve": "^11.3.0",
     "standard-version": "7.1.0",
     "standardx": "^5.0.0",
     "tap-spec": "~5.0.0",