upgrade to 3.9.8 to fix appcat cannot scan (#74)

Author: yiliuTo

.mvn/wrapper/maven-wrapper.properties

@@ -1,2 +1,3 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
-wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.4/maven-wrapper-0.5.4.jar
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.8/apache-maven-3.9.8-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.3.2/maven-wrapper-3.3.2.jar
+distributionSha256Sum=8351955a9acf2f83c136c4eee0f6db894ab6265fdbe0a94b32a380307dbaa3e1