Bump syncfusion_flutter_calendar from 28.2.3 to 28.2.12 (#2824)

Bumps [syncfusion_flutter_calendar](https://github.com/syncfusion/flutter-widgets/tree/master/packages) from 28.2.3 to 28.2.12.
- [Release notes](https://github.com/syncfusion/flutter-widgets/releases)
- [Commits](https://github.com/syncfusion/flutter-widgets/commits/HEAD/packages)

---
updated-dependencies:
- dependency-name: syncfusion_flutter_calendar
  dependency-version: 28.2.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pubspec.lock

@@ -1491,26 +1491,26 @@ packages:
     dependency: "direct main"
     description:
       name: syncfusion_flutter_calendar
-      sha256: ef6cd3f6bcfdd21ea77d5c889bb13fa6bf46ed5a0724f5d545cb43da67e9f1e2
+      sha256: "87761c6e73997d8d39181741f9e6244daf29b521aafaccf46b1bf31e86767a3f"
       url: "https://pub.dev"
     source: hosted
-    version: "28.2.3"
+    version: "28.2.12"
   syncfusion_flutter_core:
     dependency: transitive
     description:
       name: syncfusion_flutter_core
-      sha256: "213ada2c3b3555a73cb0eb1530d24d27dcf1a0a1555c0f00dd3e1486b01878ad"
+      sha256: f1d2b52697543e13bdefdc62d15868124a265987577f53224a7dbe176c8448f0
       url: "https://pub.dev"
     source: hosted
-    version: "28.2.3"
+    version: "28.2.12"
   syncfusion_flutter_datepicker:
     dependency: "direct main"
     description:
       name: syncfusion_flutter_datepicker
-      sha256: "9d2694d618d081c9477402175ff027936f60ac053d0989ca02ee65b2e27a65c7"
+      sha256: cfc91ebacee63b2c5220e541736f8df211d4f0bfbf34265778862ae20faf094f
       url: "https://pub.dev"
     source: hosted
-    version: "28.2.3"
+    version: "28.2.12"
   synchronized:
     dependency: transitive
     description:

pubspec.yaml

@@ -70,7 +70,7 @@ dependencies:
   shared_preferences: ^2.5.3
   shimmer: ^3.0.0
   stack_trace: ^1.11.1
-  syncfusion_flutter_calendar: ^28.2.3
+  syncfusion_flutter_calendar: ^28.2.12
   syncfusion_flutter_datepicker: ^28.2.3
   timelines_plus: ^1.0.6
   tutorial_coach_mark: ^1.3.0