docs: update Node.js stable release policy (#43135)

* docs: update Node.js stable release policy

Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>

* Update docs/tutorial/electron-timelines.md

Co-authored-by: Erick Zhao <erick@hotmail.ca>

Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>

docs/tutorial/electron-timelines.md

@@ -97,19 +97,12 @@ is as follows:
 
 <img src="https://raw.githubusercontent.com/nodejs/Release/main/schedule.svg?sanitize=true" alt="Releases">
 
-As a rule, stable branches of Electron do not receive Node.js upgrades after they have been cut.
 If Electron has recently updated its `main` branch to a new major version of Node.js, the next stable
 branch to be cut will be released with the new version.
 
-Patch upgrades of Node that contain significant security or bug fixes, and are submitted
-more than 2 weeks prior to a stable release date, will be accepted into an Electron alpha
-or beta release branch.
-
-Minor upgrades of Node that contain significant security or bug fixes, and are submitted
-more than 2 weeks prior to a stable release date may be accepted into an Electron alpha or
-beta release branch on a case-by-case basis. These requests will be reviewed and voted on
-by the [Releases Working Group](https://github.com/electron/governance/tree/main/wg-releases),
-to ensure minimal disruption for developers who may be consuming alpha or beta releases.
+Stable release lines of Electron will receive minor and patch bumps of Node.js after they are released.
+Patch bumps to Node.js will be released in patch releases of Electron, and minor bumps to Node.js will result in a minor release of Electron.
+Security-only release branches will receive security-related changes from Node.js releases, but not the full release.
 
 ### Breaking API changes