use a cjs compatible get-port

Signed-off-by: aramissennyeydd <aramis.sennyey@doordash.com>

packages/backend-openapi-utils/package.json

@@ -44,7 +44,7 @@
     "express": "^4.17.1",
     "express-openapi-validator": "^5.0.4",
     "express-promise-router": "^4.1.0",
-    "get-port": "^7.1.0",
+    "get-port": "^5.1.1",
     "json-schema-to-ts": "^3.0.0",
     "lodash": "^4.17.21",
     "mockttp": "^3.13.0",

yarn.lock

@@ -3750,7 +3750,7 @@ __metadata:
     express: ^4.17.1
     express-openapi-validator: ^5.0.4
     express-promise-router: ^4.1.0
-    get-port: ^7.1.0
+    get-port: ^5.1.1
     json-schema-to-ts: ^3.0.0
     lodash: ^4.17.21
     mockttp: ^3.13.0
@@ -28305,13 +28305,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"get-port@npm:^7.1.0":
-  version: 7.1.0
-  resolution: "get-port@npm:7.1.0"
-  checksum: f4d23b43026124007663a899578cc87ff37bfcf645c5c72651e9810ebafc759857784e409fb8e0ada9b90e5c5db089b0ae2f5f6b49fba1ce2e0aff86094ab17d
-  languageName: node
-  linkType: hard
-
 "get-stdin@npm:^9.0.0":
   version: 9.0.0
   resolution: "get-stdin@npm:9.0.0"