build(deps): bump flame_tiled from 1.12.0 to 1.21.0

Bumps [flame_tiled](https://github.com/flame-engine/flame/tree/main/packages) from 1.12.0 to 1.21.0.
- [Release notes](https://github.com/flame-engine/flame/releases)
- [Changelog](https://github.com/flame-engine/flame/blob/main/CHANGELOG.md)
- [Commits](https://github.com/flame-engine/flame/commits/flame_tiled-v1.21.0/packages)

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

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

pubspec.lock

@@ -341,10 +341,10 @@ packages:
     dependency: "direct main"
     description:
       name: flame_tiled
-      sha256: "2145d63c5f62ffe357bf31ce18b287f68b1cff6c216e1ea4b01fdcf0cd878f3a"
+      sha256: "03c255f88ec0afbcf5a4eb725de17574efe59f24af17813ee1c8a97d557e2c37"
       url: "https://pub.dev"
     source: hosted
-    version: "1.12.0"
+    version: "1.21.0"
   flutter:
     dependency: "direct main"
     description: flutter

pubspec.yaml

@@ -13,7 +13,7 @@ dependencies:
   flame: ^1.8.1
   flame_audio: ^2.10.5
   flame_behaviors: ^0.2.0
-  flame_tiled: ^1.12.0
+  flame_tiled: ^1.21.0
   flutter:
     sdk: flutter
   flutter_bloc: ^8.1.6