Update PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

@@ -6,5 +6,6 @@ _What issues does this PR close?_
 - [ ] The PR title is short and expressive.
 - [ ] I have updated the CHANGELOG.md. See [changelog_update.md](https://github.com/sovity/authority-portal/tree/main/docs/dev/changelog_updates.md) for more information.
 - [ ] I have updated the Deployment Migration Notes Section in the CHANGELOG.md for any configuration / external API changes.
+- [ ] I have updated the Community Edition [Postman-Collection](https://github.com/sovity/edc-ce/blob/main/docs/api/postman_collection.json) if I changed existing APIs or added new APIs (e.g. for Management-API or API-Wrapper)
 - [ ] I have performed a **self-review**
 ```