Create SECURITY.md

SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 6.0.x   | :white_check_mark: |
+| 5.0.x   | :x:                |
+| 4.0.x   | :x:                |
+| 3.0.x   | :x:                |
+| 2.0.x   | :x:                |
+| 1.0.x   | :x:                |
+
+## Reporting a Vulnerability
+
+If you have any security problems, you can send an email to zoujingli@qq.com