update flake.lock and workstation.nix for nixpkgs revisions and clean up vscode settings

vscode/settings.json

@@ -41,6 +41,5 @@
   "[dockercompose]": {
     "editor.defaultFormatter": "ms-azuretools.vscode-docker"
   },
-  "terminal.integrated.defaultLocation": "editor",
   "go.toolsManagement.autoUpdate": true,
 }