wireguard: bump version with downgraded gradle
wireguard: bump version with downgraded gradle

The build server is still not updated, so this new tag has an older
gradle so we can get things building again here.

Signed-off-by: Jason A. Donenfeld <e7e312fea4c2c1aad2bb075d739111890e1ce08b@zx2c4.com>

f-droid/fdroiddata,f-droid/fdroiddata