doc: update support channels

[ovflowd]

This PR updates the SUPPORT.md adding the Node.js Website Learn section and the new Discord server.

[github-actions]

Fast-track has been requested by @ovflowd. Please 👍 to approve.

[nodejs-github-bot]

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----------------------------------- PR info ------------------------------------
Title      doc: update support channels (#57538)
Author     Claudio W. <cwunder@gnome.org> (@ovflowd)
Branch     ovflowd:chore/update-support -> nodejs:main
Labels     meta, fast-track
Commits    2
 - doc: update support channels
 - Update .github/SUPPORT.md
Committers 2
 - Claudio Wunder <cwunder@gnome.org>
 - GitHub <noreply@github.com>
PR-URL: https://github.com/nodejs/node/pull/57538
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/57538
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
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   ℹ  This PR was created on Tue, 18 Mar 2025 18:46:18 GMT
   ✔  Approvals: 2
   ✔  - Yagiz Nizipli (@anonrig) (TSC): https://github.com/nodejs/node/pull/57538#pullrequestreview-2696255813
   ✔  - Luigi Pinca (@lpinca): https://github.com/nodejs/node/pull/57538#pullrequestreview-2697737060
   ℹ  This PR is being fast-tracked
   ✔  Last GitHub CI successful
   ℹ  Green GitHub CI is sufficient
--------------------------------------------------------------------------------
   ✔  No git cherry-pick in progress
   ✔  No git am in progress
   ✔  No git rebase in progress
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- Bringing origin/main up to date...
From https://github.com/nodejs/node
 * branch                  main       -> FETCH_HEAD
   e6a4155b70..524c07873c  main       -> origin/main
✔  origin/main is now up-to-date
main is out of sync with origin/main. Mismatched commits:
 - b81ff869ae doc: make stability labels more consistent
 - 524c07873c doc: make stability labels more consistent
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HEAD is now at 524c07873c doc: make stability labels more consistent
   ✔  Reset to origin/main
- Downloading patch for 57538
From https://github.com/nodejs/node
 * branch                  refs/pull/57538/merge -> FETCH_HEAD
✔  Fetched commits as e6a4155b70d6..cd3737d2b8b5
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[main 0a49b7b879] doc: update support channels
 Author: Claudio W <cwunder@gnome.org>
 Date: Tue Mar 18 19:45:58 2025 +0100
 1 file changed, 4 insertions(+), 3 deletions(-)
[main 8b00e1dffb] Update .github/SUPPORT.md
 Author: Claudio W. <cwunder@gnome.org>
 Date: Tue Mar 18 21:31:42 2025 +0100
 1 file changed, 1 insertion(+), 1 deletion(-)
   ✔  Patches applied
There are 2 commits in the PR. Attempting autorebase.
Rebasing (2/4)
Executing: git node land --amend --yes
--------------------------------- New Message ----------------------------------
doc: update support channels
PR-URL: #57538

Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
[detached HEAD d5d0b179a9] doc: update support channels

Author: Claudio W <cwunder@gnome.org>

Date: Tue Mar 18 19:45:58 2025 +0100

1 file changed, 4 insertions(+), 3 deletions(-)

Rebasing (3/4)

Rebasing (4/4)

Executing: git node land --amend --yes

--------------------------------- New Message ----------------------------------

Update .github/SUPPORT.md
Co-authored-by: Yagiz Nizipli <yagiz@nizipli.com>

PR-URL: #57538

Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
[detached HEAD b0e7215764] Update .github/SUPPORT.md

Author: Claudio W. <cwunder@gnome.org>

Date: Tue Mar 18 21:31:42 2025 +0100

1 file changed, 1 insertion(+), 1 deletion(-)

Successfully rebased and updated refs/heads/main.
ℹ  Add commit-queue-squash label to land the PR as one commit, or commit-queue-rebase to land as separate commits.

https://github.com/nodejs/node/actions/runs/14020621549

[nodejs-github-bot]

Landed in 3861ecc