ci/cd: bump Node.js environment to 20.x

This commit upgrades Node.js version to v20.x in CI/CD environment.

Previously used Node 18.x is moving towards end-of-life, with a planned
date of 2025-04-30. In contrast, Node 20.x has been offering long-term
support (LTS) since 2023-10-24. This makes Node 20.x a stable and
recommended version for production environments.

This commit also configures `actions/setup-node` with the
`check-latest` flag to always use the latest Node 20.x version, keeping
CI/CD setup up-to-date with minimal maintenance.
Details:
- actions/setup-node#165
- actions/setup-node#160

Using Node 20.x in CI/CD environments provides better compatibility with
Electron v29.0 which moves to Node 20.x.
Details:
- electron/electron#40343

This upgrade improves network connection handling in CI/CD pipelines
(where issues occur due to GitHub runners not supporting IPv6).
Details:
- actions/runner#3138
- actions/runner-images#668
- actions/runner#3213
- actions/runner-images#9540

Node 20.x adopts the Happy Eyeballs algorithm for improved IPv6
connectivity.
- nodejs/node#40702
- nodejs/node#41625
- nodejs/node#44731

This mitigates issues like `UND_ERR_CONNECT_TIMEOUT` and localhost DNS
resolution in CI/CD environments:
Details:
- nodejs/node#40537
- actions/runner#3213
- actions/runner-images#9540

Node 20 introduces `setDefaultAutoSelectFamily`, a global function from
Node 19.4.0, enabling better IPv4 support, especially in environments
with limited or problematic IPv6 support.
Details:
- nodejs/node#45777

Node 20.x defaults to the new `autoSelectFamily`, improving network
connection reliability in GitHub runners lacking full IPv6 support.
Details:
- nodejs/node#46790

.github/actions/force-ipv4/README.md

@@ -7,8 +7,8 @@ This GitHub action enforces IPv4 for all outgoing network requests. It addresses
 ## Background
 
 Some applications attempt network connections over IPv6.
-Such as requests made by Node's `fetch` API causes `UND_ERR_CONNECT_TIMEOUT` errors [3] [4].
-This happens when the software cannot handle this such as by using Happy Eyeballs [5] [6].
+Such as requests made by Node's `fetch` API causes `UND_ERR_CONNECT_TIMEOUT` [3] [4] and similar issues [5].
+This happens when the software cannot handle this such as by using Happy Eyeballs [6] [7].
 
 ## Usage
 
@@ -27,5 +27,6 @@ This action is a workaround addressing specific IPv6-related connectivity issues
 [2]: https://archive.ph/2024.03.28-185838/https://github.com/actions/runner-images/issues/668 "IPv6 on GitHub-hosted runners · Issue #668 · actions/runner-images · GitHub | github.com"
 [3]: https://archive.ph/2024.03.28-185847/https://github.com/actions/runner/issues/3213 "GitHub runner cannot send `fetch` with `node`, failing with IPv6 DNS error `UND_ERR_CONNECT_TIMEOUT` · Issue #3213 · actions/runner · GitHub | github.com"
 [4]: https://archive.ph/2024.03.28-185853/https://github.com/actions/runner-images/issues/9540 "Cannot send outbound requests using node fetch, failing with IPv6 DNS error UND_ERR_CONNECT_TIMEOUT · Issue #9540 · actions/runner-images · GitHub | github.com"
-[5]: https://archive.ph/2024.03.28-185900/https://github.com/nodejs/node/issues/41625 "Happy Eyeballs support (address IPv6 issues in Node 17) · Issue #41625 · nodejs/node · GitHub | github.com"
-[6]: https://archive.ph/2024.03.28-185910/https://github.com/nodejs/undici/issues/1531 "fetch times out in under 5 seconds · Issue #1531 · nodejs/undici · GitHub | github.com"
+[5]: https://archive.today/2024.03.30-113315/https://github.com/nodejs/node/issues/40537 "\"localhost\" favours IPv6 in node v17, used to favour IPv4 · Issue #40537 · nodejs/node · GitHub"
+[6]: https://archive.ph/2024.03.28-185900/https://github.com/nodejs/node/issues/41625 "Happy Eyeballs support (address IPv6 issues in Node 17) · Issue #41625 · nodejs/node · GitHub | github.com"
+[7]: https://archive.ph/2024.03.28-185910/https://github.com/nodejs/undici/issues/1531 "fetch times out in under 5 seconds · Issue #1531 · nodejs/undici · GitHub | github.com"

.github/actions/setup-node/action.yml

@@ -5,4 +5,5 @@ runs:
       name: Setup node
       uses: actions/setup-node@v4
       with:
-        node-version: 18.x
+        node-version: 20.x
+        check-latest: true