Merge upstream NixOS changes. Includes security fixes for
imagemagick (CVE-2021-20176), nodejs (CVE-2021-22883, CVE-2021-22884, CVE-2021-23840),
postgresql (CVE-2021-3393) and screen (CVE-2021-26937) and a kernel update.
(#PL-129712).
Update Elasticsearch and Kibana to 7.10.2 (#PL-129713).