[EPEL-devel] Rebasing nlohmann_json to 3.6.1 in EPEL7

[Kyle Knoepfel]

Hi all,

I am rebasing nlohmann_json from 3.3.1 to 3.6.1 in epel7 to agree with the version in
epel8. This change is necessary for supporting a new epel7 package jsonnet.

Bodhi update: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2021-b95dc99fad

Assuming no issues or objections I will push it in to the stable when possible.

Thanks,
Kyle