perf: replace PaletteService with blurred cover background, bump v3.5.1

pubspec.yaml

@@ -1,7 +1,7 @@
 name: spotiflac_android
 description: Download Spotify tracks in FLAC from Tidal, Qobuz & Amazon Music
 publish_to: "none"
-version: 3.5.0+74
+version: 3.5.1+75
 
 environment:
   sdk: ^3.10.0
@@ -43,7 +43,6 @@ dependencies:
   # Material Expressive 3 / Dynamic Color
   dynamic_color: ^1.7.0
   material_color_utilities: ^0.11.1
-  palette_generator: ^0.3.3+4
 
   # Permissions
   permission_handler: ^12.0.1