chore(deps): bump visibility_detector from 0.3.3 to 0.4.0+2 (#797)

Bumps [visibility_detector](https://github.com/google/flutter.widgets/tree/master/packages) from 0.3.3 to 0.4.0+2.
- [Commits](https://github.com/google/flutter.widgets/commits/HEAD/packages)

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

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

pubspec.lock

@@ -2225,10 +2225,10 @@ packages:
     dependency: "direct main"
     description:
       name: visibility_detector
-      sha256: "15c54a459ec2c17b4705450483f3d5a2858e733aee893dcee9d75fd04814940d"
+      sha256: dd5cc11e13494f432d15939c3aa8ae76844c42b723398643ce9addb88a5ed420
       url: "https://pub.dev"
     source: hosted
-    version: "0.3.3"
+    version: "0.4.0+2"
   vm_service:
     dependency: transitive
     description:

pubspec.yaml

@@ -94,7 +94,7 @@ dependencies:
   url_launcher: ^6.1.7
   uuid: ^3.0.7
   version: ^3.0.2
-  visibility_detector: ^0.3.3
+  visibility_detector: ^0.4.0+2
   window_manager: ^0.3.1
   window_size:
     git: