chore: update subproject commit and enhance PersonalMilestone schema

- Updated the subproject commit reference in epess-database to the latest version.
- Added milestoneOrder field to PersonalMilestoneSchema for improved milestone ordering.
- Ensured consistency in Prisma types with the latest schema changes.

src/PersonalMilestone/personalmilestone.schema.ts

@@ -20,6 +20,9 @@ export class PersonalMilestoneSchema extends PothosSchema {
         id: t.exposeID('id', {
           description: 'The ID of the personal milestone.',
         }),
+        milestoneOrder: t.exposeInt('milestoneOrder', {
+          description: 'The order of the personal milestone.',
+        }),
         scheduleId: t.exposeString('scheduleId', {
           description: 'The ID of the schedule the personal milestone belongs to.',
         }),