Create SECURITY.md

- Prepare a first contact point for security vulnerability

SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+Use this section to tell people about which versions of your project are
+currently being supported with security updates.
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 5.2.4   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+If you have found any security vulnerability you can contact us via 
[email protected]
+