nix flake update

flake.lock

@@ -38,11 +38,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1656537499,
-        "narHash": "sha256-/VWO08m9xOZOtO71m/1DymqoWGJjVKdjFfVN0Un8PnQ=",
+        "lastModified": 1656595481,
+        "narHash": "sha256-cPNp+VDQ8GzQlR7RXfjTWUWv68eCiSZziebKIKVpm7k=",
         "owner": "astro",
         "repo": "microvm.nix",
-        "rev": "ea0f013c0e8558d3c2773019f15d254d32d5daa2",
+        "rev": "1484594333adecfcaef171804b27f1fd8db29eb0",
         "type": "github"
       },
       "original": {
@@ -53,11 +53,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1656500841,
-        "narHash": "sha256-13IRoh3uu29S4IfoVO6Sb0UPwzDhSqXoBKKQ4ssEzF0=",
+        "lastModified": 1656589841,
+        "narHash": "sha256-Kqd6r9aNIzjYGhMFYATdKwRbXBCGLcdqAJMLr4I8LG0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "be6da3774db3746e6ae94bf412dd3707e35b2800",
+        "rev": "dbb62c34bbb5cdf05f1aeab07638b24b0824d605",
         "type": "github"
       },
       "original": {
@@ -146,11 +146,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1656567145,
-        "narHash": "sha256-2xlv+g7kIb3f+1QdHlqpHPFfFw4myXUCC+cWk+6C4aE=",
+        "lastModified": 1656644123,
+        "narHash": "sha256-xg7D9aYBdmzH08MH6DlEOJW1UR5DYaQkvvvhnuXEatc=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "3e95d6696b51f88b3ebfc7a21aefaeeb70a245bd",
+        "rev": "8b4c5bef319198920fd03a916dd5f6600147358b",
         "type": "github"
       },
       "original": {