[statet-dev] [CI] Build 'statet-main' #220 (202305040900 / commit a488ab

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Build 'statet-main' #220 (202305040900 / commit a488ab65)
https://ci.eclipse.org/statet/job/statet-main/220/
Result state: SUCCESS

### Changes

  * Update target platform to Java SE >= 17
  * CleanUp: Remove use of deprecated APIs
  * CleanUp: Fix some compiler warnings and potential NPEs
  * [Collections] Add implementation for methods added in newer Java
  * [RJ-Server] Remove use of deprecated Policy/SecurityManager
  * Update project settings (Eclipse 2023-06)
  * [Ltk-Model] Fix potential NPE
  * CleanUp: Make use of pattern matching and other new language features
  * [R-Debug] CleanUp: Make use of constants of rj.server.dbg.FrameContext
  * [R-Help] Remove unwanted OSGi libraries from server archive

### Deployed to

  * Downloads:  https://download.eclipse.org/statet/integration/latest
  * Maven repo: https://repo.eclipse.org/content/repositories/statet-snapshots