Bump flutter_quill from 6.1.11 to 6.1.12

Bumps [flutter_quill](https://github.com/singerdmx/flutter-quill) from 6.1.11 to 6.1.12.
- [Release notes](https://github.com/singerdmx/flutter-quill/releases)
- [Changelog](https://github.com/singerdmx/flutter-quill/blob/master/CHANGELOG.md)
- [Commits](https://github.com/singerdmx/flutter-quill/commits)

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

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

pubspec.lock

@@ -358,7 +358,7 @@ packages:
       name: flutter_quill
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.1.11"
+    version: "6.1.12"
   flutter_test:
     dependency: "direct dev"
     description: flutter

pubspec.yaml

@@ -36,7 +36,7 @@ dependencies:
   just_audio: ^0.9.31
   percent_indicator: ^4.2.2
   bottom_navy_bar: ^6.0.0
-  flutter_quill: ^6.1.11
+  flutter_quill: ^6.1.12
   fluttertoast: ^8.1.2
   window_manager: ^0.2.9