To use the latest release you'll need to add the following dependency:
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>3.0.2</version>
</dependency>
Since PDFBox 2.0.4
PDFBox 2.0.4 introduced a new command line setting
-Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true
which may improve the performance of rendering PDFs on some systems especially if there are a lot of images on a page.