@chichitsai0517 You need to use 2.3.5-p1 directly. If you'll re-read the notification again same has been mentioned in email as well. Below is brief of the same.
"Please note that an error was discovered during our pre-release period and we have released a correction via a new version. If you access the code via Magento.com, you will only have access to the correct versions (2.3.5-p1 and 2.3.4-p2) but if you access the code via Composer you will need to manually request these specific versions. "
- Tarandeep
Problem solved?Please give 'Kudos' and accept 'Answer as Solution'.