Update isomorphic-fetch to v3.0.0

Release Notes: matthew-andrews/isomorphic-fetch#192

The goal is to go from node-fetch v1.x to v2.x because of
GHSA-r683-j2x4-v87g

package.json

@@ -16,30 +16,30 @@
     "clean": "rm -rf dist node_modules *~"
   },
   "dependencies": {
+    "@mark.probst/typescript-json-schema": "~0.32.0",
+    "@mark.probst/unicode-properties": "~1.1.0",
+    "browser-or-node": "^1.2.1",
     "chalk": "^2.4.1",
     "collection-utils": "^1.0.1",
     "command-line-args": "^4.0.6",
     "command-line-usage": "^5.0.5",
     "graphql": "^0.11.7",
     "is-url": "^1.2.4",
+    "isomorphic-fetch": "^3.0.0",
     "js-base64": "^2.4.3",
     "lodash": "^4.17.21",
     "moment": "^2.22.1",
     "node-fetch": "^2.6.1",
     "pako": "^1.0.6",
     "pluralize": "^7.0.0",
+    "readable-stream": "2.3.0",
     "stream-json": "1.1.3",
     "string-to-stream": "^1.1.0",
     "typescript": "~3.2.1",
-    "@mark.probst/typescript-json-schema": "~0.32.0",
-    "@mark.probst/unicode-properties": "~1.1.0",
     "urijs": "^1.19.6",
     "uuid": "^3.2.1",
     "wordwrap": "^1.0.0",
-    "yaml": "^1.5.0",
-    "readable-stream": "2.3.0",
-    "isomorphic-fetch": "^2.2.1",
-    "browser-or-node": "^1.2.1"
+    "yaml": "^1.5.0"
   },
   "devDependencies": {
     "@types/urijs": "^1.19.8",