H-326: speed up profile handler race tests (#56)

Co-authored-by: Rogee <rogee@ipao.vip>

backend/internal/handler/api/v1/profile_handler_test.go

@@ -121,6 +121,13 @@ func (s *ProfileHandlerTestSuite) SetupSuite() {
 	s.router = s.buildRouter()
 }
 
+func (s *ProfileHandlerTestSuite) TearDownSuite() {
+	if s.db != nil {
+		sqlDB, _ := s.db.DB()
+		_ = sqlDB.Close()
+	}
+}
+
 func (s *ProfileHandlerTestSuite) buildRouter() *gin.Engine {
 	r := gin.New()