Bump fastjson from 1.2.51 to 1.2.83 (#28)

Bumps [fastjson](https://github.com/alibaba/fastjson) from 1.2.51 to 1.2.83.
- [Release notes](https://github.com/alibaba/fastjson/releases)
- [Commits](alibaba/fastjson@1.2.51...1.2.83)

---
updated-dependencies:
- dependency-name: com.alibaba:fastjson
  dependency-type: direct:production
...

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pom.xml

@@ -50,7 +50,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.51</version>
+            <version>1.2.83</version>
         </dependency>
         <dependency>
             <groupId>commons-io</groupId>