refactor: updated sdk constraints and removed warnings (#149)

* fix: Code warnings and analysis_options.yaml config for 'strong-mode' * fix: Upgraded Dart SDK range and dependencies based on "Resolvable" parameter * fix: Downgraded flutter_test dependency * fix: Upgraded flutter test dev_dependency --------- Co-authored-by: Bryan Santos <bryansantos.fdtobc@gmail.com>

Author: bryansantosdeve

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Removed code warnings and upgraded dart SDK range and each dependency to latest resolvable version available - [148](https://github.com/dartoos-dev/json_cache/issues/148).
+
 ## [3.0.1] - 2023-08-10
 
 ### Fixed

analysis_options.yaml

@@ -2,6 +2,7 @@ include: package:lint/package.yaml
 
 analyzer:
  strong-mode:
+ implicit-casts: false
 
 linter:
  rules: