Updating the license.

package.json

@@ -11,7 +11,7 @@
     "test": "vitest",
     "postinstall": "node ./fix-jest-dom.mjs && patch-package"
   },
-  "license": "MIT",
+  "license": "GPL-3.0-only",
   "devDependencies": {
     "@capacitor/cli": "^4.6.3",
     "@testing-library/jest-dom": "^5.16.5",