chore(deps): bump popover from 0.2.6+3 to 0.2.8

Bumps [popover](https://github.com/minikin/popover) from 0.2.6+3 to 0.2.8.
- [Release notes](https://github.com/minikin/popover/releases)
- [Changelog](https://github.com/minikin/popover/blob/main/CHANGELOG.md)
- [Commits](https://github.com/minikin/popover/compare/v0.2.6...v0.2.8)

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

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

pubspec.lock

@@ -1095,7 +1095,7 @@ packages:
       name: popover
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.6+3"
+    version: "0.2.8"
   popover_gtk:
     dependency: transitive
     description:

pubspec.yaml

@@ -47,7 +47,7 @@ dependencies:
   introduction_screen: ^3.0.2
   audio_session: ^0.1.10
   file_picker: ^5.2.2
-  popover: ^0.2.6+3
+  popover: ^0.2.8
   queue: ^3.1.0+1
   auto_size_text: ^3.0.0
   badges: ^2.0.3