databases/pgmodeler: Update to 0.9.3-beta

Since Qt5.15 update, pgmodeler 0.9.2 crashes. A new release is coming, we can as well fix this crash and prepare for this release.

• Update to 0.9.3-beta
• Reorder and alphabetize USES

Changelog:

https://github.com/pgmodeler/pgmodeler/blob/develop/CHANGELOG.md

Reported by: tcberner
Approved by: tcberner (mentor)
Differential Revision: D25877