nix: update and add packages

nix/configuration.nix

@@ -314,6 +314,8 @@ in rec {
     parted
     drawio
     du-dust # Like du tree but better
+    gnupg
+    rpi-imager
   ];
 
   nixpkgs.overlays = [

nix/flake.lock

@@ -22,11 +22,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1693580457,
-        "narHash": "sha256-5MEMXCW7yMDYyiZQn1FZYDCO+5/FyuE8NjOuv/eTMjY=",
+        "lastModified": 1694876469,
+        "narHash": "sha256-Mzw/MauX3idW39iG06Mmef4ouxonnJ89ynuAnQnJT5c=",
         "owner": "doronbehar",
         "repo": "nix-matlab",
-        "rev": "e89e96d19f21e305cd43043f4daf5898e4d997ce",
+        "rev": "f30a9bf0e1b2e246c2b7850b2262a8375eb62a00",
         "type": "gitlab"
       },
       "original": {
@@ -37,11 +37,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1693500674,
-        "narHash": "sha256-HDlg/j0Et+D8NWayNOsdvZrJ+nA4h3muXQxIMUlpDXo=",
+        "lastModified": 1694760568,
+        "narHash": "sha256-3G07BiXrp2YQKxdcdms22MUx6spc6A++MSePtatCYuI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "da938d190e2335209df6806ddcb982634e51918c",
+        "rev": "46688f8eb5cd6f1298d873d4d2b9cf245e09e88e",
         "type": "github"
       },
       "original": {
@@ -51,11 +51,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1693565476,
-        "narHash": "sha256-ya00zHt7YbPo3ve/wNZ/6nts61xt7wK/APa6aZAfey0=",
+        "lastModified": 1694767346,
+        "narHash": "sha256-5uH27SiVFUwsTsqC5rs3kS7pBoNhtoy9QfTP9BmknGk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "aa8aa7e2ea35ce655297e8322dc82bf77a31d04b",
+        "rev": "ace5093e36ab1e95cb9463863491bee90d5a4183",
         "type": "github"
       },
       "original": {