wireguard: bump to 1.0.20200330

wireguard: bump to 1.0.20200330

* queueing: backport skb_reset_redirect change from 5.6
* version: bump

This release has only one slight change, to put it closer to the 5.6
codebase, but its main purpose is to bump us to a 1.0.y version number.
Now that WireGuard 1.0.0 has been released for Linux 5.6 [1], we can put
the same number on the backport compat codebase.

When OpenWRT bumps to Linux 5.6, we'll be able to drop this package
entirely, which I look forward to seeing.

[1] https://lists.zx2c4.com/pipermail/wireguard/2020-March/005206.html

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>