As a plugin developer you can use this plugin as dependency of your plugin by adding a dependency tag to your POM.
To add the latest version of this plugin as a maven dependency, use the following:
<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>bitbucket-kubernetes-credentials</artifactId>
    <version>613.v124fea_1166d5</version>
</dependency>