Add upgrade-support link on issue creation (facebook#28411)

Summary:
This PR adds a https://github.com/react-native-community/upgrade-support link for the user when creating an issue.
Changelog:
[Internal]

Pull Request resolved: facebook#28411

Reviewed By: cpojer

Differential Revision: D20714274

Pulled By: hramos

fbshipit-source-id: 4ca42224a50e386b95f21f0fb236a917e1b6b982

.github/ISSUE_TEMPLATE/config.yml

@@ -3,6 +3,9 @@ contact_links:
     - name: 📃 Documentation Issue
       url: https://github.com/facebook/react-native-website/issues
       about: Please report documentation issues in the React Native website repository.
+    - name: ⤴️ Upgrade Issue
+      url: https://github.com/react-native-community/upgrade-support
+      about: Need help upgrading to a newer React Native version? Visit the Upgrade Support repository.
     - name: 🤔 Questions and Help
       url: https://reactnative.dev/help
       about: Looking for help with your app? Please refer to the React Native community's support resources.