[Doc] - Update minimal version of Node supported

[genintho]

Part of #4947

The troubleshooting section of the site has not been updated when the support of Node 4 was officially dropped.

[codecov-io]

Codecov Report

Merging #5300 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5300   +/-   ##
=======================================
  Coverage   61.25%   61.25%           
=======================================
  Files         205      205           
  Lines        6893     6893           
  Branches        3        4    +1     
=======================================
  Hits         4222     4222           
  Misses       2670     2670           
  Partials        1        1

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0580b5b...bdbe5c0. Read the comment docs.

[thymikee]

Thanks! Can you mention that it's possible to get Node 4 working with custom environment? #4947 (comment)

[cpojer]

Merging, we can add the other section in a separate PR.

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.