flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/ddd63d2b8546a84bdcb27a9779e4f4ae0eec86e6' (2022-07-14)
  → 'github:nix-community/fenix/4ee90504942122e544639926d689ecad41aebc95' (2022-07-15)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/794ecd58a32dfd9fdab0596b181133d4d2ae4b6f' (2022-07-13)
  → 'github:rust-lang/rust-analyzer/029184d9772c9d0ad749400409be1a3feb473521' (2022-07-14)
• Updated input 'nixos-unstable':
    'github:nixos/nixpkgs/68c63e60b8413260605efbe1ac5addaa099cdfb3' (2022-07-12)
  → 'github:nixos/nixpkgs/4a01ca36d6bfc133bc617e661916a81327c9bbc8' (2022-07-14)

flake.lock

@@ -8,11 +8,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1657780062,
-        "narHash": "sha256-gxhX2gtaUrclcYO7+Dj5R2gONmWX0aORlM6k0dRWWFs=",
+        "lastModified": 1657866432,
+        "narHash": "sha256-Gy0TWadagZlUsYl/K8iL6QMeemuSXG5pgpMVtEdd51w=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "ddd63d2b8546a84bdcb27a9779e4f4ae0eec86e6",
+        "rev": "4ee90504942122e544639926d689ecad41aebc95",
         "type": "github"
       },
       "original": {
@@ -319,11 +319,11 @@
     },
     "nixos-unstable": {
       "locked": {
-        "lastModified": 1657624652,
-        "narHash": "sha256-rFJNM0X/dxekT6EESSh80mlBGqztfN/XOF/oRL6in68=",
+        "lastModified": 1657802959,
+        "narHash": "sha256-9+JWARSdlL8KiH3ymnKDXltE1vM+/WEJ78F5B1kjXys=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "68c63e60b8413260605efbe1ac5addaa099cdfb3",
+        "rev": "4a01ca36d6bfc133bc617e661916a81327c9bbc8",
         "type": "github"
       },
       "original": {
@@ -544,11 +544,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1657713616,
-        "narHash": "sha256-GpYrMuRo0DIJ3qIqIQlIy/WZnrqZFqgRwUJK1roBoVU=",
+        "lastModified": 1657832242,
+        "narHash": "sha256-zqMCj+ra4dx/Z+9HaKPalKMSUfhLZIvud6ocKae45Tk=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "794ecd58a32dfd9fdab0596b181133d4d2ae4b6f",
+        "rev": "029184d9772c9d0ad749400409be1a3feb473521",
         "type": "github"
       },
       "original": {