jsch in build - the group id has changed

[hazendaz]

Not sure the use case here but while looking at the jdk 24 support, I noticed the legacy jsch. Its been long supported under the following group id

<dependency>
    <groupId>com.github.mwiede</groupId>
    <artifactId>jsch</artifactId>
    <version>0.2.21</version>
</dependency>

See https://github.com/mwiede/jsch for more information. It is drop in place but since not sure of usage here I have not sent a PR and it would immediately conflict with the currently one for jdk 24. So I figured I would mention this.

[rzwitserloot]

We only use jsch in the build in order to automate the uploading of artefacts to our own hosting stuff. And I'm not sure we still need it, now that hosting has switched to cloudflare.

This ticket thus consists of two steps:

1. Investigate if we still need JSch in any way.
2. If yes, spend a minute considering if that's still a good idea.
3. If still needed, update it.