package/wireguard-linux-compat: bump version to 1.0.20200401
Matching the now-mainline wireguard code in kernel 5.6.
For details, see the announcement:
https://lists.zx2c4.com/pipermail/wireguard/2020-April/005237.html
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 4285b1bac3c0206a9d5b1ad350641b3a6e762878)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>