Add the following repository to your repositories:

<repository>
    <id>dieterblancke</id>
    <url>https://repo.dieterblancke.xyz/artifactory/dieterblancke-public/</url>
</repository>

After that, you can add the following dependency to your dependencies:

<dependency>
    <groupId>be.dieterblancke.configuration</groupId>
    <artifactId>ConfigurationAPI</artifactId>
    <version>2.0.3</version>
    <scope>compile</scope>
</dependency>

If you are going to compile the code in your JAR, it is heavily recommended to relocate it to avoid conflicts with other plugins:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.1.0</version>
            <configuration>
                <relocations>
                    <relocation>
                        <pattern>be.dieterblancke.configuration</pattern>
                        <!-- Replace the package below with your package -->
                        <shadedPattern>example.package.configuration</shadedPattern>
                    </relocation>
                </relocations>
            </configuration>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>