flake: update dependencies

flake.lock

@@ -3,11 +3,11 @@
     "mozilla-overlay": {
       "flake": false,
       "locked": {
-        "lastModified": 1645464064,
-        "narHash": "sha256-YeN4bpPvHkVOpQzb8APTAfE7/R+MFMwJUMkqmfvytSk=",
+        "lastModified": 1650459918,
+        "narHash": "sha256-sroCK+QJTmoXtcRkwZyKOP9iAYOPID2Bwdxn4GkG16w=",
         "owner": "mozilla",
         "repo": "nixpkgs-mozilla",
-        "rev": "15b7a05f20aab51c4ffbefddb1b448e862dccb7d",
+        "rev": "e1f7540fc0a8b989fb8cf701dc4fd7fc76bcf168",
         "type": "github"
       },
       "original": {
@@ -18,16 +18,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1646588256,
-        "narHash": "sha256-ZHljmNlt19nSm0Mz8fx6QEhddKUkU4hhwFmfNmGn+EY=",
+        "lastModified": 1653920503,
+        "narHash": "sha256-BBeCZwZImtjP3oYy4WogkQYy5OxNyfNciVSc1AfZgLQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2ebb6c1e5ae402ba35cca5eec58385e5f1adea04",
+        "rev": "a634c8f6c1fbf9b9730e01764999666f3436f10a",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-21.11",
+        "ref": "nixos-22.05",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,7 +1,7 @@
 {
   description = "Bare-metal Rust on Zynq-7000";
 
-  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-21.11;
+  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-22.05;
   inputs.mozilla-overlay = { url = github:mozilla/nixpkgs-mozilla; flake = false; };
 
   outputs = { self, nixpkgs, mozilla-overlay }: