v1.8.0-RC1: support Java 18/19

Start from DCM 1.7+ upgrade to Java 8 🚀

Features

• support Java 18/19

Cleanup

• upgrade dependencies/plugins
• refactor: remove java 6 logic since upgrade to java 8
• add java 18/19 in ci

Java Dns Cache Manipulator Library

• User Guide & Document
• java apidocs

maven dependency:

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dns-cache-manipulator</artifactId>
    <version>1.8.0-RC1</version>
</dependency>

Already deployed to maven central repository.

Java Dns Cache Manipulator Tool

• User Guide & Document
• Download dcm-1.8.0-RC1.tar.gz