Merge branch '8.5' into 9.5

SECURITY.md

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+# Security Policy
+
+PHPUnit is a framework for writing as well as a commandline tool for running tests. Writing and running tests is a development-time activity. There is no reason why PHPUnit should be installed on a webserver.
+
+**If you upload PHPUnit to a webserver then your deployment process is broken. On a more general note, if your `vendor` directory is publicly accessible on your webserver then your deployment process is also broken.**
+
+Please note that if you upload PHPUnit to a webserver "bad things" may happen. [You have been warned.](https://thephp.cc/articles/phpunit-a-security-risk)
+
+## Security Contact Information
+
+After the above, if you still would like to report a security vulnerability, please email `[email protected]`.