[Security] Deno Sandbox Escape

[masasron]

The Deno file sandbox does not handle symbolic links correctly.
When running Deno with specific write access the Deno.symlink method can be used to gain access to any directory.

Proof of concept:
https://hackers.report/report/614876917a7b150012836bb8

[caspervonb]

See also #9607