修复不兼容API9的问题

Signed-off-by: 明月清风 <2928139825@qq.com>

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.1.0-rc.0
+
+- 修复不兼容API9的问题
+
 ## 2.1.0
 
 - ArkTs语法整改:

imageknife/oh-package.json5

@@ -14,7 +14,7 @@
   "main": "index.ets",
   "repository": "https://gitee.com/openharmony-tpc/ImageKnife",
   "type": "module",
-  "version": "2.1.0",
+  "version": "2.1.0-rc.0",
   "dependencies": {
     "@ohos/disklrucache": "^2.0.1",
     "@ohos/svg": "^2.1.0",