fix(release process): fix maven version number

Author: KaiSchwarz-cnic

.travis.yml

@@ -29,8 +29,8 @@ before_install:
   - export PATH=${M2_HOME}/bin:${PATH}
 install:
   - travis_retry wget https://www-us.apache.org/dist/maven/maven-3/3.6.2/binaries/apache-maven-3.6.2-bin.tar.gz
-  - tar -xvzf apache-maven-3.6.0-bin.tar.gz
-  - sudo mv apache-maven-3.6.0 maven
+  - tar -xvzf apache-maven-3.6.-bin.tar.gz
+  - sudo mv apache-maven-3.6.2 maven
 script:
   - mvn site -ntp
   - mvn package -ntp