[statet-dev] [CI] Build 'statet-main' #238 (202406302000 / commit f2e6d5

[ci-admin@xxxxxxxxxxx]

Build 'statet-main' #238 (202406302000 / commit f2e6d50f)
https://ci.eclipse.org/statet/job/statet-main/238/
Result state: FAILURE

### Changes

  * [R-Help] Fix init of http client on systems with more cpu cores
  * Update target platform to Java SE >= 21, except bundles for RJ lib
  * [Collections] Add ImSequencedCollection / .getFirst / .getLast
  * [Collections] Make use of PrimitiveIterator
  * CleanUp: Tweak usage of collections
  * CleanUp: Tweak usage of Strings.indexOf
  * [AutoNature] Add nullable annotations
  * [R-Help] Tweak resource handling
  * CleanUp: Fix some compiler warnings