Merge branch 'fix/bg_rxdart_bump' into minor

Author: ryanheise

just_audio_background/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.0.1-beta.13
+
+* Support rxdart 0.28.x.
+
 ## 0.0.1-beta.12
 
 * Support setWebCrossOrigin.

just_audio_background/pubspec.yaml

@@ -1,7 +1,7 @@
 name: just_audio_background
 description: An add-on for just_audio that supports background playback and media notifications.
 homepage: https://github.com/ryanheise/just_audio/tree/master/just_audio_background
-version: 0.0.1-beta.12
+version: 0.0.1-beta.13
 topics:
   - audio
   - sound
@@ -12,14 +12,14 @@ dependencies:
   just_audio_platform_interface: ^4.3.0
   # just_audio_platform_interface:
   #   path: ../just_audio_platform_interface
-  audio_service: ^0.18.9
-  audio_session: ^0.1.14
+  audio_service: ^0.18.14
+  audio_session: ^0.1.20
   flutter:
     sdk: flutter
   flutter_web_plugins:
     sdk: flutter
   meta: ^1.3.0
-  rxdart: '>=0.26.0 <0.28.0'
+  rxdart: '>=0.26.0 <0.29.0'
 
 dev_dependencies:
   flutter_lints: ^2.0.1