fix wrong Java release
<jee.path>/</jee.path>
<jee.port>3333</jee.port>
<refine.data>/tmp/refine</refine.data>
- <maven-compiler-plugin.release>9</maven-compiler-plugin.release> <!-- Which Java version to cross-compile against -->
+ <maven-compiler-plugin.release>8</maven-compiler-plugin.release> <!-- Which Java version to cross-compile against -->
<maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
<build-helper-maven-plugin.version>3.1.0</build-helper-maven-plugin.version>
<surefire.version>2.22.2</surefire.version>
