flake.lock: Update

Flake input changes:

* Updated 'nixpkgs': 'github:NixOS/nixpkgs/bb8a5e54845012ed1375ffd5f317d2fdf434b20e' -> 'github:NixOS/nixpkgs/f77036342e2b690c61c97202bf48f2ce13acc022'

flake.lock

@@ -19,11 +19,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1622593737,
-        "narHash": "sha256-9loxFJg85AbzJrSkU4pE/divZ1+zOxDy2FSjlrufCB8=",
+        "lastModified": 1624862269,
+        "narHash": "sha256-JFcsh2+7QtfKdJFoPibLFPLgIW6Ycnv8Bts9a7RYme0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bb8a5e54845012ed1375ffd5f317d2fdf434b20e",
+        "rev": "f77036342e2b690c61c97202bf48f2ce13acc022",
         "type": "github"
       },
       "original": {