niv niv: update 5f0defe2 -> f7c53883

## Changelog for niv:
Branch: master
Commits: [nmattia/niv@5f0defe2...f7c53883](nmattia/niv@5f0defe...f7c5388)

* [`0ca27c51`](nmattia/niv@0ca27c5) --- ([nmattia/niv⁠#401](https://togithub.com/nmattia/niv/issues/401))
* [`84fed676`](nmattia/niv@84fed67) Add info when init with cached Nixpkgs ([nmattia/niv⁠#402](https://togithub.com/nmattia/niv/issues/402))
* [`f7c53883`](nmattia/niv@f7c5388) hlint refactor ([nmattia/niv⁠#403](https://togithub.com/nmattia/niv/issues/403))

nix/sources.json

@@ -89,10 +89,10 @@
  "homepage": "https://github.com/nmattia/niv",
  "owner": "nmattia",
  "repo": "niv",
- "rev": "5f0defe2f71020812e39a51dab68a64fb293ace1",
- "sha256": "12wscam2163pirzbmz0pw6cmnn6xa0dy8ax5kxi5bgxcp728vxyd",
+ "rev": "f7c538837892dd2eb83567c9f380a11efb59b53f",
+ "sha256": "0xl33k24vfc29cg9lnp95kvcq69qbq5fzb7jk9ig4lgrhaarh651",
  "type": "tarball",
- "url": "https://github.com/nmattia/niv/archive/5f0defe2f71020812e39a51dab68a64fb293ace1.tar.gz",
+ "url": "https://github.com/nmattia/niv/archive/f7c538837892dd2eb83567c9f380a11efb59b53f.tar.gz",
  "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
  },
  "nixpkgs": {