Get listening port from workerd, closes #532

Wait for control messages using the new `--control-fd` flag for
signalling when `workerd` is ready to receive requests, and the port
it's listening on. This allows us to pass port `0` directly to
workerd, and have it allocate a free port, preventing races. It also
allows us to remove the repeated readiness probes. 🎉

Author: mrbbot

package-lock.json

@@ -31,7 +31,6 @@
     "types:bundle": "npm run types:build && node scripts/types.mjs"
   },
   "devDependencies": {
-    "@ava/get-port": "^2.0.0",
     "@ava/typescript": "^4.0.0",
     "@microsoft/api-extractor": "^7.33.6",
     "@types/node": "^18.11.9",
@@ -48,7 +47,6 @@
     "eslint-plugin-es": "^4.1.0",
     "eslint-plugin-import": "^2.24.2",
     "eslint-plugin-prettier": "^3.4.1",
-    "esm": "^3.2.25",
     "expect-type": "^0.15.0",
     "patch-package": "^6.4.7",
     "prettier": "^2.3.2",

package.json

@@ -32,14 +32,13 @@
     "better-sqlite3": "^8.1.0",
     "capnp-ts": "^0.7.0",
     "exit-hook": "^2.2.1",
-    "get-port": "^5.1.1",
     "glob-to-regexp": "^0.4.1",
     "http-cache-semantics": "^4.1.0",
     "kleur": "^4.1.5",
     "source-map-support": "0.5.21",
     "stoppable": "^1.1.0",
     "undici": "^5.13.0",
-    "workerd": "^1.20230419.0",
+    "workerd": "^1.20230512.0",
     "ws": "^8.11.0",
     "youch": "^3.2.2",
     "zod": "^3.20.6"