Bump ics from 2.27.0 to 2.29.0

Bumps [ics](https://github.com/adamgibbons/ics) from 2.27.0 to 2.29.0.
- [Release notes](https://github.com/adamgibbons/ics/releases)
- [Commits](https://github.com/adamgibbons/ics/commits/v2.29.0)

---
updated-dependencies:
- dependency-name: ics
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "date-fns": "^2.22.1",
     "date-fns-tz": "^1.1.4",
-    "ics": "^2.27.0",
+    "ics": "^2.29.0",
     "mongoose": "^5.12.12",
     "next": "^10.2.3",
     "next-iron-session": "^4.1.13",