Merge in DNS/dnsproxy from fix-specs to master

Squashed commit of the following:

commit 1cd4f165aed73d22c7643af398eb44ce39314736
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 18 19:01:54 2022 +0300

    all: use task env vars

commit 8f98ececa3f6f5a4ef3d4e92ce01f6d38ab31403
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 18 18:50:09 2022 +0300

    all: upd golangci-lint version

commit 835234b3afd5752abb0d0f338d64e171a6149777
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 18 18:25:13 2022 +0300

    all: upd specs