git: openjdk/jdk8u-dev: 8340815: Add SECURITY.md file

[Paul Hohensee]

Changeset: b4264bc1
Branch: master
Author:    George Adams <gdams at openjdk.org>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2024-10-02 19:40:53 +0000
URL:       https://git.openjdk.org/jdk8u-dev/commit/b4264bc17ede605e8a4b6cb2f98e893b3eb7b222

8340815: Add SECURITY.md file

Reviewed-by: andrew
Backport-of: 0474f020bf276c761f46bc8ba0873ed90a8fd19b

+ SECURITY.md