Chore: move back to wget at some point

[joonas-fi]

Weird fix: a774e99

Maybe hitting this: alpinelinux/docker-alpine#135

"You need to update libseccomp on your host to 2.4.2 or newer and Docker to 19.03.9 or newer (see moby/moby#40734)."

Things broken in:

• GitHub actions buildx (only ARM runner)
• Own Raspberry Pi:

$ docker run --rm -it alpine sh
$ wget https://pkgs.tailscale.com/stable/tailscale_1.8.7_arm.tgz
wget: bad address 'pkgs.tailscale.com'
$ nslookup pkgs.tailscale.com
nslookup: clock_gettime(MONOTONIC) failed

Root cause seems to be https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.13.0#time64_requirements