Fix security vulnerability (#267)

* Fix security vulnerability

Signed-off-by: Jinbo Wang <[email protected]>

* Fix checkstyle build error

Signed-off-by: Jinbo Wang <[email protected]>

Author: testforstephen

pom.xml

@@ -126,7 +126,7 @@
                         <dependency>
                             <groupId>com.puppycrawl.tools</groupId>
                             <artifactId>checkstyle</artifactId>
-                            <version>8.0</version>
+                            <version>8.18</version>
                         </dependency>
                         <dependency>
                             <groupId>com.github.sevntu-checkstyle</groupId>