fix: update db connect charset and collation

src/framework/datasource/datasource.go

@@ -34,7 +34,7 @@ func loadDialect() map[string]dialectInfo {
 		// 数据库类型对应的数据库连接
 		switch item["type"] {
 		case "mysql":
-			dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local",
+			dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&collation=utf8mb4_general_ci&parseTime=True&loc=Local",
 				item["username"],
 				item["password"],
 				item["host"],