Update dependency version of fastjson and jacoco-maven-plugin

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

pom.xml

@@ -41,7 +41,7 @@
 
     <properties>
         <!-- Compile libs -->
-        <fastjson.version>1.2.54</fastjson.version>
+        <fastjson.version>1.2.55</fastjson.version>
 
         <!-- Test libs -->
         <junit.version>4.12</junit.version>
@@ -58,7 +58,7 @@
         <maven.javadoc.version>3.0.1</maven.javadoc.version>
         <maven.deploy.version>2.8.2</maven.deploy.version>
         <maven.gpg.version>1.6</maven.gpg.version>
-        <maven.jacoco.version>0.8.2</maven.jacoco.version>
+        <maven.jacoco.version>0.8.3</maven.jacoco.version>
         <maven.jar.version>3.1.0</maven.jar.version>
     </properties>