Bump fastjson from 1.2.50 to 1.2.83

Bumps [fastjson](https://github.com/alibaba/fastjson) from 1.2.50 to 1.2.83.
- [Release notes](https://github.com/alibaba/fastjson/releases)
- [Commits](https://github.com/alibaba/fastjson/compare/1.2.50...1.2.83)

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index ec1c4fa..9e4203e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -242,7 +242,7 @@
             <dependency>
                 <groupId>com.alibaba</groupId>
                 <artifactId>fastjson</artifactId>
-                <version>1.2.50</version>
+                <version>1.2.83</version>
             </dependency>
             <dependency>
                 <groupId>junit</groupId>