Update June 2026 security release credit

Signed-off-by: Matteo Collina <hello@matteocollina.com>

Author: mcollina

apps/site/pages/en/blog/vulnerability/june-2026-security-releases.md

@@ -113,7 +113,7 @@ A flaw in Node.js Permission API can cause a local server to be started (via a U
 
 This vulnerability affects one supported release line: **Node.js 26**.
 
-Thank you, to cyberjoker for reporting this vulnerability and thank you RafaelGSS for fixing it.
+Thank you, to Vitaly Simonovich for reporting this vulnerability and thank you RafaelGSS for fixing it.
 
 ## HTTP Response Queue Poisoning via TOCTOU Race Condition in `http.Agent` (CVE-2026-48931) - (low)