fix: upgrade form-data from 2.3.2 to 2.5.1

Snyk has created this PR to upgrade form-data from 2.3.2 to 2.5.1.

See this package in NPM:
https://www.npmjs.com/package/form-data

See this project in Snyk:
https://app.snyk.io/org/postman/project/a9d4dce7-380d-43fb-af50-eb18c793de24?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

codegens/js-fetch/package.json

@@ -28,7 +28,7 @@
   "homepage": "https://github.com/postmanlabs/code-generators/tree/master/codegens/js-fetch",
   "dependencies": {},
   "devDependencies": {
-    "form-data": "2.3.2",
+    "form-data": "2.5.1",
     "node-fetch": "2.1.1"
   },
   "engines": {