Merge pull request #1331 from wcc526/patch-1

Fastjson has a serious security problem in 1.2.58

README.md

@@ -5,7 +5,8 @@ EasyExcel
 [![License](http://img.shields.io/:license-apache-brightgreen.svg)](http://www.apache.org/licenses/LICENSE-2.0.html)
 
 [QQ群: 662022184](//shang.qq.com/wpa/qunwpa?idkey=53d9d821b0833e3c14670f007488a61e300f00ff4f1b81fd950590d90dd80f80)
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+[钉钉1群（已满）: 21960511](https://qr.dingtalk.com/action/joingroup?code=v1,k1,cchz6k12ci9B08NNqhNRFGXocNVHrZtW0kaOtTKg/Rk=&_dt_no_comment=1&origin=11)
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 [官方网站: https://yuque.com/easyexcel](https://www.yuque.com/easyexcel/doc/easyexcel)
 

pom.xml

@@ -97,7 +97,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.58</version>
+            <version>1.2.68</version>
             <scope>test</scope>
         </dependency>
         <dependency>