build(deps): bump com.alibaba:fastjson from 2.0.50 to 2.0.51

Bumps [com.alibaba:fastjson](https://github.com/alibaba/fastjson2) from 2.0.50 to 2.0.51.
- [Release notes](https://github.com/alibaba/fastjson2/releases)
- [Commits](alibaba/fastjson2@2.0.50...2.0.51)

---
updated-dependencies:
- dependency-name: com.alibaba:fastjson
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -82,7 +82,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>2.0.50</version>
+            <version>2.0.51</version>
         </dependency>
         <dependency>
             <groupId>org.java-websocket</groupId>