community-profiles: update profiles to use the new digitalcourage nameservers

community-profiles: update profiles to use the new digitalcourage nameservers

The old digitalcourage nameservers 85.214.20.141 and 2a01:238:42f6:ac00:2a29:4f7f:b6d:ef46
will be retired in 2020.  The new nameservers are 46.182.19.48 and 2a02:2970:1002::18.

The change is announced https://digitalcourage.de/support/zensurfreier-dns-server

This fixes https://github.com/freifunk/openwrt-packages/issues/11

This is cherry-picked from https://github.com/freifunk/openwrt-packages/pull/16/commits/2c4a93e646607b0e2a2faa272c985beff52606e1

Signed-off-by: pmelange <isprotejesvalkata@gmail.com>