docs: update runtime Node.js versions to the October 2026 releases (#5048)

## Summary

The runtime list now shows the Node.js versions deploys actually run on:
`node-22` 22.23.4, `node-24` (and the default `node`) 24.22.1, and
`node-26` 26.12.1.

The deploy base images moved to the October 2026 Node.js security
releases, so the old patch versions on the page were out of date.

Based on [fix(base-images): build node 22, 24 and 26 on the October 2026
Node.js security
releases](40f241b34),
which bumped the base images.

Docs only. Mark ready for review to merge.

Co-authored-by: mintlify[bot] <109931778+mintlify[bot]@users.noreply.github.com>

Author: mintlify[bot]

docs/snippets/node-versions.mdx

@@ -1,9 +1,9 @@
 Trigger.dev runs your deployed tasks on one of these runtimes:
 
-- Node.js `node` — the default, tracks the current Node.js LTS (today `24.18.0`)
-- Node.js `node-22` — `22.16.0`
-- Node.js `node-24` — `24.18.0`
-- Node.js `node-26` — `26.4.0`
+- Node.js `node` — the default, tracks the current Node.js LTS (today `24.22.1`)
+- Node.js `node-22` — `22.23.4`
+- Node.js `node-24` — `24.22.1`
+- Node.js `node-26` — `26.12.1`
 - Bun `bun` — `1.3.3`
 
 If you don't set a `runtime`, or you set `runtime: "node"`, your tasks run on the current Node.js LTS. That version moves forward as new LTS releases land, so set an explicit version — for example `runtime: "node-24"` — if you need it to stay fixed.