build: bump Go version to 1.19 in Nix

Signed-off-by: Mark Sagi-Kazar <mark.sagikazar@gmail.com>

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "flake-utils": {
       "locked": {
-        "lastModified": 1648297722,
-        "narHash": "sha256-W+qlPsiZd8F3XkzXOzAoR+mpFqzm3ekQkJNa+PIh1BQ=",
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "0f8662f1319ad6abf89b3380dd2722369fc51ade",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
         "type": "github"
       },
       "original": {
@@ -17,11 +17,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1649225869,
-        "narHash": "sha256-u1zLtPmQzhT9mNXyM8Ey9pk7orDrIKdwooeGDEXm5xM=",
+        "lastModified": 1662019588,
+        "narHash": "sha256-oPEjHKGGVbBXqwwL+UjsveJzghWiWV0n9ogo1X6l4cw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b6966d911da89e5a7301aaef8b4f0a44c77e103c",
+        "rev": "2da64a81275b68fdad38af669afeda43d401e94b",
         "type": "github"
       },
       "original": {

flake.nix

@@ -7,19 +7,21 @@
   };
 
   outputs = { self, nixpkgs, flake-utils, ... }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = nixpkgs.legacyPackages.${system};
-        buildDeps = with pkgs; [ git go_1_18 gnumake ];
-        devDeps = with pkgs;
-          buildDeps ++ [
-            golangci-lint
-            gotestsum
-            protobuf
-            protoc-gen-go
-            protoc-gen-go-grpc
-            kind
-          ];
-      in
-      { devShell = pkgs.mkShell { buildInputs = devDeps; }; });
+    flake-utils.lib.eachDefaultSystem (
+      system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+          buildDeps = with pkgs; [ git go_1_19 gnumake ];
+          devDeps = with pkgs;
+            buildDeps ++ [
+              golangci-lint
+              gotestsum
+              protobuf
+              protoc-gen-go
+              protoc-gen-go-grpc
+              kind
+            ];
+        in
+          { devShell = pkgs.mkShell { buildInputs = devDeps; }; }
+    );
 }