Release StackGres 1.5.0-rc2

Related #2401 Closes #2400 (closed)
Closes #2402 (closed) Closes #2349 (closed) Closes #2399

Also includes:

• fix(ui): only show form when ready to be edited
• fix: pgbouncer queries for postgres exporter are failing
• fix(ui): do not check permissions when kind is applications
• fix(ui): avoid overwrite sgshardedcluster properties