update dependency version of fastjson (#589)

diff --git a/pom.xml b/pom.xml
index ffeee72..449a404 100644
--- a/pom.xml
+++ b/pom.xml
@@ -59,7 +59,7 @@
 		<dubbo-version>2.7.3</dubbo-version>
 		<curator-version>2.12.0</curator-version>
 		<curator-test-version>4.1.0</curator-test-version>
-		<fastjson-version>1.2.46</fastjson-version>
+		<fastjson-version>1.2.67</fastjson-version>
 		<springfox-swagger-version>2.9.2</springfox-swagger-version>
 		<netty-version>4.1.42.Final</netty-version>
 		<jacoco-version>0.8.2</jacoco-version>