update node-ical to v0.17.1 (and other deps) (#3309)

- update `node-ical` to `v0.17.1` (and other deps)
- remove `luxon` (not needed anymore with new `node-ical` version)
- fix `navigator is not defined` errors in e2e tests when running with
Node `v20`

tests/e2e/helpers/global-setup.js

@@ -31,6 +31,11 @@ exports.getDocument = () => {
 		jsdom.JSDOM.fromURL(url, { resources: "usable", runScripts: "dangerously" }).then((dom) => {
 			dom.window.name = "jsdom";
 			global.window = dom.window;
+			// Following fixes `navigator is not defined` errors in e2e tests, found here
+			// https://www.appsloveworld.com/reactjs/100/37/mocha-react-navigator-is-not-defined
+			global.navigator = {
+				useragent: "node.js"
+			};
 			dom.window.fetch = fetch;
 			dom.window.onload = () => {
 				global.document = dom.window.document;