fix: pr reviewers and assignees script version error (#7645) (#7647)

* fix: pr reviewers and assignees script version error

* fix: adapt pg test

Co-authored-by: abeizn <zikuan.an@merico.dev>
diff --git a/backend/core/models/migrationscripts/20240531_add_pr_assignees_and_reviewers.go b/backend/core/models/migrationscripts/20240531_add_pr_assignees_and_reviewers.go
index fa852c9..d7cbd9f 100644
--- a/backend/core/models/migrationscripts/20240531_add_pr_assignees_and_reviewers.go
+++ b/backend/core/models/migrationscripts/20240531_add_pr_assignees_and_reviewers.go
@@ -35,7 +35,7 @@
 }
 
 func (*addPrAssigneeAndReviewer) Version() uint64 {
-	return 20250531000041
+	return 20240531000041
 }
 
 func (*addPrAssigneeAndReviewer) Name() string {
diff --git a/backend/core/models/migrationscripts/20240607_modify_pr_assignees_and_reviewers_id.go b/backend/core/models/migrationscripts/20240607_modify_pr_assignees_and_reviewers_id.go
index adfe318..3d144d3 100644
--- a/backend/core/models/migrationscripts/20240607_modify_pr_assignees_and_reviewers_id.go
+++ b/backend/core/models/migrationscripts/20240607_modify_pr_assignees_and_reviewers_id.go
@@ -28,7 +28,17 @@
 
 func (u *modifyPrAssigneeAndReviewerId) Up(basicRes context.BasicRes) errors.Error {
 	db := basicRes.GetDal()
-	err := db.DropTables(&archived.PullRequestAssignee{}, &archived.PullRequestReviewer{})
+	err := db.Exec(`delete from _devlake_migration_history
+			where script_version='20250531000041' and script_name='add pull_request_reviewers and pull_request_assignees tables'`)
+	if err != nil {
+		return err
+	}
+	err = db.Exec(`delete from _devlake_migration_history
+				where script_version='20250607000041' and script_name='modify pull_request_reviewers and pull_request_assignees id columns'`)
+	if err != nil {
+		return err
+	}
+	err = db.DropTables(&archived.PullRequestAssignee{}, &archived.PullRequestReviewer{})
 	if err != nil {
 		return err
 	}
@@ -40,7 +50,7 @@
 }
 
 func (*modifyPrAssigneeAndReviewerId) Version() uint64 {
-	return 20250607000041
+	return 20240607000041
 }
 
 func (*modifyPrAssigneeAndReviewerId) Name() string {