Update some metadata

setup.py

@@ -45,6 +45,7 @@ setuptools.setup(
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
     ],
     entry_points={"console_scripts": [
         "sticker-import=sticker.stickerimport:cmd",

web/package.json

@@ -4,7 +4,7 @@
   "description": "A fast and simple Matrix sticker picker widget",
   "repository": "https://github.com/maunium/stickerpicker",
   "author": "Tulir Asokan <tulir@maunium.net>",
-  "license": "MPL-2.0",
+  "license": "AGPL-3.0-or-later",
   "private": true,
   "scripts": {
     "esinstall": "node ./esinstall.js",