ci/pinned: update

This gives us nixpkgs-review 3.4.0 to support #415006.

From the nixpkgs-unstable channel:
https://hydra.nixos.org/eval/1816084#tabs-inputs

Changes for treefmt-nix:
numtide/treefmt-nix@1f3f7b7...a05be41

(cherry picked from commit a9589ea)

Author: wolfgangwalther

ci/pinned.json

@@ -9,9 +9,9 @@
       },
       "branch": "nixpkgs-unstable",
       "submodules": false,
-      "revision": "8ca7ec685bbee55d6dcb326abe23945c0806c39e",
-      "url": "https://github.com/NixOS/nixpkgs/archive/8ca7ec685bbee55d6dcb326abe23945c0806c39e.tar.gz",
-      "hash": "1hkxm871m66mjsc4acdki32qqnpgk3n6vi3zrzns2bwlwp6ivcjx"
+      "revision": "6afe187897bef7933475e6af374c893f4c84a293",
+      "url": "https://github.com/NixOS/nixpkgs/archive/6afe187897bef7933475e6af374c893f4c84a293.tar.gz",
+      "hash": "1x3yas2aingswrw7hpn43d9anlb08bpyk42dqg6v8f3p3yk83p1b"
     },
     "treefmt-nix": {
       "type": "Git",
@@ -22,9 +22,9 @@
       },
       "branch": "main",
       "submodules": false,
-      "revision": "1f3f7b784643d488ba4bf315638b2b0a4c5fb007",
-      "url": "https://github.com/numtide/treefmt-nix/archive/1f3f7b784643d488ba4bf315638b2b0a4c5fb007.tar.gz",
-      "hash": "13qisjalw9qvd6lkd9g8225r46j5wdjrp3zw6jrs81q2vxwdz37m"
+      "revision": "a05be418a1af1198ca0f63facb13c985db4cb3c5",
+      "url": "https://github.com/numtide/treefmt-nix/archive/a05be418a1af1198ca0f63facb13c985db4cb3c5.tar.gz",
+      "hash": "1yadm9disc59an4a6c1zidq82530rd7i7idzzsirv6dlwirbqk3q"
     }
   },
   "version": 5