Modified min Dart SDK to 3.4.0

Changed flutter_lints dependency to a wider range, to avoid forcing Dart 3.5.0 based in lints only

.github/workflows/build.yml

@@ -16,8 +16,8 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  # This is Dart 3.5.0
-  FLUTTER_MIN_SDK: '3.24.0'
+  # Min Flutter version implies Dart 3.3.0
+  FLUTTER_MIN_SDK: '3.19.0'
 
 jobs:
   format:

example/pubspec.yaml

@@ -8,7 +8,8 @@ version: 2.0.0
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
 environment:
-  sdk: ^3.0.0
+  sdk: ^3.3.0
+  flutter:  '>=3.19.0'
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions
@@ -42,13 +43,7 @@ dev_dependencies:
     sdk: flutter
   integration_test:
     sdk: flutter
-
-  # The "flutter_lints" package below contains a set of recommended lints to
-  # encourage good coding practices. The lint set provided by the package is
-  # activated in the `analysis_options.yaml` file located at the root of your
-  # package. See that file for information about deactivating specific lint
-  # rules and activating additional ones.
-  flutter_lints: ^3.0.1
+  flutter_lints: '>=4.0.0 <6.0.0'
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

pubspec.yaml

@@ -5,8 +5,8 @@ version: 8.9.1
 repository: https://github.com/781flyingdutchman/background_downloader
 
 environment:
-  sdk: ^3.3.0
-  flutter:  '>=3.0.0'
+  sdk: ^3.4.0
+  flutter:  '>=3.22.0'
 
 dependencies:
   flutter:
@@ -22,7 +22,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^5.0.0
+  flutter_lints: '>=4.0.0 <6.0.0'
   mockito: ^5.0.17
   build_runner: ^2.4.13