Update to 1.3.4

This is a security related update.

See https://github.com/PrivateBin/PrivateBin/releases/tag/1.3.4

https://github.com/PrivateBin/PrivateBin/releases/tag/1.3.3

Remove wddx from PHP options as it no longer exist.
Code doesn't reference it now.

Take over as maintainer

PR: 248144
Submitted by: dvl@FreeBSD.org
Approved by: maintainer (via private email)
MFH: 2020Q3