fix(database): Correct timezone handling for release timestamps
Changed the column type for release timestamps from 'timestamp' to 'timestamptz' in the PostgreSQL database. This update ensures that the release ages are accurately reflected in the web UI by storing the correct timezone information. Previously, the data was stored in UTC but interpreted as local user time, causing a 3-hour offset in the web UI or in my case 11-hour offset. The conversion now correctly interprets and displays the release times based on UTC.
Fixes#1138
47a1af8600