chore(policies): COM-3415 update security.md

Author: ArtyomResh

SECURITY.md

@@ -8,6 +8,6 @@
 
 ## Reporting a Vulnerability
 
-Please report (suspected) security vulnerabilities to security@csssr.com. Use https://github.com/qtm.gpg to encrypt your message.
+Please report (suspected) security vulnerabilities to security@csssr.com. Use https://github.com/qtm.gpg to encrypt your message if required.
 You will receive a response from us when we get to the issue. If the issue is confirmed, we will release a patch as soon as possible depending on complexity.
 Thank you!