chore(deps): update through2 requirement from ^2.0.3 to ^3.0.0 (#3734)

Updates the requirements on [through2](https://github.com/rvagg/through2) to permit the latest version.
- [Release notes](https://github.com/rvagg/through2/releases)
- [Commits](https://github.com/rvagg/through2/commits/v3.0.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

packages/ionic/package.json

@@ -67,7 +67,7 @@
     "superagent": "^3.8.2",
     "superagent-proxy": "^2.0.0",
     "tar": "^4.3.0",
-    "through2": "^2.0.3",
+    "through2": "^3.0.0",
     "tslib": "^1.9.0",
     "update-notifier": "^2.3.0",
     "uuid": "^3.2.1"