PR_template_update (#8948)

Author: VojtechBartoska

.github/PULL_REQUEST_TEMPLATE.md

@@ -5,6 +5,7 @@
 2. [ ] Please provide related links (*eg. Issue which will be closed by this Pull Request*)
 3. [ ] Please **update relevant Documentation** if applicable
 4. [ ] Please check [Contributing guide](https://docs.espressif.com/projects/arduino-esp32/en/latest/contributing.html)
+5. [ ] Please **confirm option to "Allow edits and access to secrets by maintainers"** when opening a Pull Request
 
 *This entire section above can be deleted if all items are checked.*