add Security policy

Signed-off-by: Thomas Sjögren <[email protected]>

Author: konstruktoid

Diff for: SECURITY.md

@@ -0,0 +1,10 @@
+# Security Policy
+
+## Supported Versions
+
+The current [upstream](https://github.com/konstruktoid/action-pylint)
+and the [latest published version](https://github.com/konstruktoid/action-pylint/releases) are supported.
+
+## Reporting a Bug or Vulnerability
+
+If you found a bug or vulnerability or just something odd, feel free to submit a issue or improve the code by creating a pull request.