Correct way to add GPG key

[ecspresso]

using /etc/apt/keyrings is deprecated, see https://manpages.debian.org/testing/apt/apt-key.8.en.html

Description of change

Updated the documentation on how to add gpg key and install on debian/ubuntu distros.
Using /etc/apt/keyrings is deprecated, see https://manpages.debian.org/testing/apt/apt-key.8.en.html

Checklist

• documentation is changed or added (if applicable)
• contribution guidelines followed here

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[karianna]

@ecspresso Are you able to sign the Eclipse CLA?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (19ef97a) 99.20% compared to head (189adcb) 99.20%.
Report is 27 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2459   +/-   ##
=======================================
  Coverage   99.20%   99.20%           
=======================================
  Files          87       87           
  Lines        6541     6541           
  Branches      552      552           
=======================================
  Hits         6489     6489           
  Misses         52       52           

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[ecspresso]

@ecspresso Are you able to sign the Eclipse CLA?

How do I check this?

I was able to add the key, update and install without any error messages.

[smlambert]

Eclipse Foundation Contributor's Agreement (ECA), details here: https://adoptium.net/docs/eca-sign-off/

[xavierfacq]

@ecspresso 👋 Any news from you ? Do you have created an account for the Eclipse Foundation Contributor ?

[ecspresso]

Hello again, I have created an account and signed the Eclipse Contributor Agreement.

Most the email used for my Eclipse account as my public email on Github?

EDIT: I have two accounts on github, one is public and I used the other one on Eclipse. Cannot seem to change it there as well.