Bump window_manager from 0.2.9 to 0.3.1 (#71)

Bumps [window_manager](https://github.com/leanflutter/window_manager) from 0.2.9 to 0.3.1.
- [Release notes](https://github.com/leanflutter/window_manager/releases)
- [Changelog](https://github.com/leanflutter/window_manager/blob/main/CHANGELOG.md)
- [Commits](https://github.com/leanflutter/window_manager/compare/v0.2.9...v0.3.1)

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

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

pubspec.lock

@@ -1069,7 +1069,7 @@ packages:
       name: window_manager
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.9"
+    version: "0.3.1"
   xdg_directories:
     dependency: transitive
     description:

pubspec.yaml

@@ -38,7 +38,7 @@ dependencies:
   bottom_navy_bar: ^6.0.0
   flutter_quill: ^6.1.11
   fluttertoast: ^8.1.2
-  window_manager: ^0.2.9
+  window_manager: ^0.3.1
 
 dev_dependencies:
   flutter_test: