docs: add note on vulnerability disclosure policy rewards (#1708)

Co-authored-by: Michał Olender <[email protected]>

Author: terezavrchovinova

sources/platform/security.md

@@ -84,6 +84,12 @@ If you notice or suspect a potential security issue, please report it to our sec
 - Impact analysis
 - Affected URL or endpoint
 
+:::note Voluntary disclosures
+
+Thank you for helping us keep Apify secure! Please note that we don’t offer financial or other rewards for vulnerability reports. Participation in our VDP is entirely voluntary, and we sincerely appreciate your contribution to the safety of the platform and the community.
+
+:::
+
 ### Rules of engagement
 
 - Only target accounts or data you control (test accounts)