fix: Program Enrollment tests (#29592)

diff --git a/erpnext/education/doctype/program_enrollment/program_enrollment.py b/erpnext/education/doctype/program_enrollment/program_enrollment.py
index a23d492..4d0f3a9 100644
--- a/erpnext/education/doctype/program_enrollment/program_enrollment.py
+++ b/erpnext/education/doctype/program_enrollment/program_enrollment.py
@@ -6,6 +6,7 @@
 from frappe import _, msgprint
 from frappe.desk.reportview import get_match_cond
 from frappe.model.document import Document
+from frappe.query_builder.functions import Min
 from frappe.utils import comma_and, get_link_to_form, getdate
 
 
@@ -60,8 +61,15 @@
 			frappe.throw(_("Student is already enrolled."))
 
 	def update_student_joining_date(self):
-		date = frappe.db.sql("select min(enrollment_date) from `tabProgram Enrollment` where student= %s", self.student)
-		frappe.db.set_value("Student", self.student, "joining_date", date)
+		table = frappe.qb.DocType('Program Enrollment')
+		date = (
+			frappe.qb.from_(table)
+				.select(Min(table.enrollment_date).as_('enrollment_date'))
+				.where(table.student == self.student)
+		).run(as_dict=True)
+
+		if date:
+			frappe.db.set_value("Student", self.student, "joining_date", date[0].enrollment_date)
 
 	def make_fee_records(self):
 		from erpnext.education.api import get_fee_components
diff --git a/erpnext/hr/doctype/employee/test_employee_reminders.py b/erpnext/hr/doctype/employee/test_employee_reminders.py
index bdb51b0..a4097ab 100644
--- a/erpnext/hr/doctype/employee/test_employee_reminders.py
+++ b/erpnext/hr/doctype/employee/test_employee_reminders.py
@@ -207,8 +207,8 @@
 
 		# teardown: enable emp 2
 		frappe.db.set_value('Employee', self.test_employee_2.name, {
-			'status': 'Left',
-			'holiday_list': self.holiday_list_2
+			'status': 'Active',
+			'holiday_list': self.holiday_list_2.name
 		})
 
 	def test_advance_holiday_reminders_weekly(self):
@@ -232,8 +232,8 @@
 
 		# teardown: enable emp 2
 		frappe.db.set_value('Employee', self.test_employee_2.name, {
-			'status': 'Left',
-			'holiday_list': self.holiday_list_2
+			'status': 'Active',
+			'holiday_list': self.holiday_list_2.name
 		})
 
 	def test_reminder_not_sent_if_no_holdays(self):