Update Flutter and Dart to latest stable version (3.7.0+) and essential dependencies#69

Copilot wants to merge 3 commits intomainnventive/FlutterApplicationTemplate:mainfrom

copilot/fix-cd2c8d7b-1a6b-4394-a94e-82a4116b5d9bnventive/FlutterApplicationTemplate:copilot/fix-cd2c8d7b-1a6b-4394-a94e-82a4116b5d9bCopy head branch name to clipboard