test(integrations): add missing timeout to nextcloud recurring-range test

The 'recurring events that go beyond the range' test was missing the
20s timeout used by every other test in the file, so it fell back to
vitest's default 5s and intermittently timed out against the slow
Nextcloud container. Add the explicit timeout.

packages/integrations/test/nextcloud.spec.ts

@@ -297,7 +297,7 @@ describe("Nextcloud integration", () => {
       // Assert
       const relevantEvents = events.filter((event) => event.title === testEvent.summary);
       expect(relevantEvents).toHaveLength(5);
-    });
+    }, 20_000);
   });
 });