Declare gnome-shell 40.1 compatibility

[nonblockingswitcher] / metadata.json

{
  "name": "Non-Blocking Switcher",
  "description": "Application switching oughtn't stop all other keyboard shortcuts",
  "uuid": "nonblockingswitcher@scottworley.com",
  "url": "https://gitlab.gnome.org/chuck/non-blocking-switcher",
  "version": 1,
  "shell-version": [
    "3.32",
    "40.1"
  ]
}