rdb配置不支持yaml后缀文件 (#3964)

增加rdb配置支持yaml后缀文件

client-adapter/common/src/main/java/com/alibaba/otter/canal/client/adapter/support/MappingConfigsLoader.java

@@ -55,7 +55,7 @@ public class MappingConfigsLoader {
         }
         if (filePath.exists()) {
             String fileName = filePath.getName();
-            if (!fileName.endsWith(".yml")) {
+            if (!(fileName.endsWith(".yml") || fileName.endsWith(".yaml"))) {
                 return null;
             }
             try (InputStream in = new FileInputStream(filePath)) {