chore: update dependencies (#3921)

Normally, I wouldn't update the dependencies again so soon, but
`node-ical` underwent some major changes (see
jens-maus/node-ical#404) with the last release,
and I'd like to use it here as early as possible to see if there are any
problems with it.

Author: KristjanESPERANTO

CHANGELOG.md

@@ -28,7 +28,7 @@ planned for 2026-01-01
 
 ### Updated
 
-- [core] Update dependencies (#3909, #3916)
+- [core] Update dependencies (#3909, #3916, #3921)
 
 ## [2.33.0] - 2025-10-01