Update OWASPItalyDay2025-06-19.md

Author: MatOwasp

events/OWASPItalyDay2025-06-19.md

@@ -12,7 +12,7 @@ region: Europe
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-<img src="https://github.com/OWASP/www-chapter-italy/blob/master/assets/images/OWASPITADAY2025Banner.png?raw=true" width=1600/>  
+<img src="https://github.com/OWASP/www-chapter-italy/blob/master/assets/images/OWASPITADAY2025Banner.png?raw=true" width=400/>  
 </center>
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