feat(blog): create post for v26.4.0

[github-actions]

Creates a new blog post for v26.4.0

Check this workflow's logs at https://github.com/nodejs/nodejs.org/actions/runs/28136664771.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
nodejs-org	Ready	Preview	Jun 24, 2026 11:40pm

[cursor]

PR Summary

Low Risk
Documentation-only addition of a standard auto-generated release post; no runtime or application behavior changes.

Overview
Adds apps/site/pages/en/blog/release/v26.4.0.md, a new English release blog entry for Node.js 26.4.0 (Current) dated 2026-06-24, using the standard blog-post front matter (category release, author Antoine du Hamel).

The post mirrors upstream release notes: a Notable Changes section (semver-minor highlights such as package maps, node:vfs, TLS certificate compression, readFile() caller buffers, and related items) plus the full Commits changelog, download links for all platforms, and PGP-signed SHASUMS. No site code, routing, or build logic is modified—only this generated markdown page.

^{Reviewed by Cursor Bugbot for commit f8618c1. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🟢 97	🟢 93	🟢 96	🟢 100	🔗
/en/about	🟢 100	🟢 94	🟢 96	🟠 88	🔗
/en/about/previous-releases	🟢 98	🟢 97	🟢 96	🟢 100	🔗
/en/download	🟢 99	🟢 96	🟠 81	🟢 100	🔗
/en/download/archive/current	🟢 100	🟢 97	🟢 100	🟢 100	🔗
/en/blog	🟢 100	🟢 97	🟢 96	🟢 100	🔗

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.39%. Comparing base (71312e2) to head (f8618c1).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8974   +/-   ##
=======================================
  Coverage   75.39%   75.39%           
=======================================
  Files          98       98           
  Lines        8630     8630           
  Branches      318      318           
=======================================
  Hits         6507     6507           
  Misses       2119     2119           
  Partials        4        4           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.