nix/sources.json: upgrade common the get the latest nixpkgs 19.09
* nix/sources.json: upgrade common the get the latest nixpkgs 19.09
See:
* Ensure fmt job is run on Linux
"common": {
"ref": "master",
"repo": "ssh://git@github.com/dfinity-lab/common",
- "rev": "598cfb3e67bf9d557f89d39e28e74fb5666984e1",
+ "rev": "e69a1c1d6e92db172272f9ae5c932988c79fd078",
"type": "git"
},
"dfinity": {
