RM-11107: Raise min NodeJS/npm to 18.x/9.x

• We support + recommended NodeJS 18.x since 23Q3
• We support + recommended NodeJS 20.x since 24Q1 (backported to 23Q3.2 and 23Q4.1 even)
• Remove support for oldest NodeJS 16.x as it is past its End Of life already (in Sept 2023)
• Also raise minimum npm version to 9.x
  • NodeJS 18.x embedded 9.x since Feb 2023 already
  • NodeJS 18.x switched to 10.x since late 2023 already

Mantis issue: https://issues.openbravo.com/view.php?id=54824

try:

• all try-runs done with: --jobs-to-run SIMPLE as we are only checking 'blocks or allows NodeJS/npm' no need to run will i.e. selenium
• OK: run with NodeJS 20 (default): https://builds.openbravo.com/view/try/job/try-init/3410/
• OK- run with NodeJS 18: https://builds.openbravo.com/view/try/job/try-init/3411/
• FAILED: run with NodeJS 16: https://builds.openbravo.com/view/try/job/try-init/3414/
  • This run is correct to fail as change is to unsupport NodeJS 16.x
• FAILED: run with NodeJS 18.13.0 (including old npm 8.x) https://builds.openbravo.com/view/try/job/try-init/3416/
  • This run is correct to fail with message npm 8.x is not supported