Update dependencies

[eclipse-viatra-bot]

| --- | --- | | Bugzilla Link | 582850 | | Status | NEW | | Importance | P3 normal | | Reported | Jan 12, 2024 10:39 EDT | | Modified | Jan 12, 2024 10:39 EDT | | Version | 2.9.0 | | Reporter | Zoltan Ujhelyi |

Description

Starting version 2.9 we should remove support for old dependencies, at the very least we should

• Require Java 11
• Update the latest platform version that works and builds with Java 11
• Update the latest Xtext version that works and builds with Java 11
• Update Tycho to current version

In addition to that, we should review the dependencies and build configurations to see whether we could simplify our current structure.