flake.lock: Update

Flake lock file updates:

• Updated input 'nixos-flake':
    'github:srid/nixos-flake/6335b2f05f007b95ac2438b0a55498f9f20e73f7' (2024-06-22)
  → 'github:srid/nixos-flake/8cefa1e7af06d366f5d3fd7c97e9edbf4d38c476' (2024-06-26)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/dd457de7e08c6d06789b1f5b88fc9327f4d96309' (2024-06-19)
  → 'github:nixos/nixpkgs/89c49874fb15f4124bf71ca5f42a04f2ee5825fd' (2024-06-26)
• Updated input 'simple-nixos-mailserver/flake-compat':
    'github:edolstra/flake-compat/009399224d5e398d03b22badca40a37ac85412a1' (2022-11-17)
  → 'github:edolstra/flake-compat/0f9255e01c2351cc7d116c072cb317785dd33b33' (2023-10-04)
• Updated input 'simple-nixos-mailserver/utils':
    'github:numtide/flake-utils/5021eac20303a61fafe17224c087f5519baed54d' (2020-11-14)
  → 'github:numtide/flake-utils/d465f4819400de7c8d874d50b982301f28a84605' (2024-02-28)
• Added input 'simple-nixos-mailserver/utils/systems':
    'github:nix-systems/default/da67096a3b9bf56a91d16901293e51ba5b49a27e' (2023-04-09)
• Updated input 'unstable':
    'github:nixos/nixpkgs/a71e967ef3694799d0c418c98332f7ff4cc5f6af' (2024-06-22)
  → 'github:nixos/nixpkgs/2893f56de08021cffd9b6b6dfc70fd9ccd51eb60' (2024-06-24)

flake.lock

@@ -147,11 +147,11 @@
     "flake-compat_2": {
       "flake": false,
       "locked": {
-        "lastModified": 1668681692,
-        "narHash": "sha256-Ht91NGdewz8IQLtWZ9LCeNXMSXHUss+9COoqu6JLmXU=",
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "009399224d5e398d03b22badca40a37ac85412a1",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
         "type": "github"
       },
       "original": {
@@ -315,11 +315,11 @@
     },
     "nixos-flake": {
       "locked": {
-        "lastModified": 1719079946,
-        "narHash": "sha256-A3JUcPH00buqBgjmi0lWUZIql9+8Y7CMSXGoUXcm+yk=",
+        "lastModified": 1719437091,
+        "narHash": "sha256-UIZasVC36DS5dli1VimK0VgL6JKuxDG9cMxKq1I6OQ0=",
         "owner": "srid",
         "repo": "nixos-flake",
-        "rev": "6335b2f05f007b95ac2438b0a55498f9f20e73f7",
+        "rev": "8cefa1e7af06d366f5d3fd7c97e9edbf4d38c476",
         "type": "github"
       },
       "original": {
@@ -330,11 +330,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1718835956,
-        "narHash": "sha256-wM9v2yIxClRYsGHut5vHICZTK7xdrUGfrLkXvSuv6s4=",
+        "lastModified": 1719426051,
+        "narHash": "sha256-yJL9VYQhaRM7xs0M867ZFxwaONB9T2Q4LnGo1WovuR4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "dd457de7e08c6d06789b1f5b88fc9327f4d96309",
+        "rev": "89c49874fb15f4124bf71ca5f42a04f2ee5825fd",
         "type": "github"
       },
       "original": {
@@ -478,6 +478,21 @@
         "type": "github"
       }
     },
+    "systems_5": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "triton-vmtools": {
       "inputs": {
         "flake-utils": "flake-utils_3",
@@ -504,11 +519,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1719075281,
-        "narHash": "sha256-CyyxvOwFf12I91PBWz43iGT1kjsf5oi6ax7CrvaMyAo=",
+        "lastModified": 1719254875,
+        "narHash": "sha256-ECni+IkwXjusHsm9Sexdtq8weAq/yUyt1TWIemXt3Ko=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a71e967ef3694799d0c418c98332f7ff4cc5f6af",
+        "rev": "2893f56de08021cffd9b6b6dfc70fd9ccd51eb60",
         "type": "github"
       },
       "original": {
@@ -537,12 +552,15 @@
       }
     },
     "utils_2": {
+      "inputs": {
+        "systems": "systems_5"
+      },
       "locked": {
-        "lastModified": 1605370193,
-        "narHash": "sha256-YyMTf3URDL/otKdKgtoMChu4vfVL3vCMkRqpGifhUn0=",
+        "lastModified": 1709126324,
+        "narHash": "sha256-q6EQdSeUZOG26WelxqkmR7kArjgWCdw5sfJVHPH/7j8=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "5021eac20303a61fafe17224c087f5519baed54d",
+        "rev": "d465f4819400de7c8d874d50b982301f28a84605",
         "type": "github"
       },
       "original": {