Bump icalendar from 2.10.1 to 2.10.3

Bumps [icalendar](https://github.com/icalendar/icalendar) from 2.10.1 to 2.10.3.
- [Changelog](https://github.com/icalendar/icalendar/blob/main/CHANGELOG.md)
- [Commits](icalendar/icalendar@v2.10.1...v2.10.3)

---
updated-dependencies:
- dependency-name: icalendar
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -187,9 +187,10 @@ GEM
     htmlentities (4.3.4)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    icalendar (2.10.1)
+    icalendar (2.10.3)
       ice_cube (~> 0.16)
-    ice_cube (0.16.4)
+      ostruct
+    ice_cube (0.17.0)
     image_processing (1.12.2)
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
@@ -275,6 +276,7 @@ GEM
     omniauth-rails_csrf_protection (1.0.2)
       actionpack (>= 4.2)
       omniauth (~> 2.0)
+    ostruct (0.6.1)
     pagy (6.4.3)
     parallel (1.26.3)
     parser (3.3.7.0)