The app doesn't compile with Flutter 3.22.3

[jfahrenkrug]

When I checkout the app and the tutorial_step_0 branch, I get a bunch of compilation errors:

flutter_sdk_tutorial git:(tutorial_step_0) ✗ flutter run -d chrome
Downloading Web SDK...                                           2,456ms
Launching lib/main.dart on Chrome in debug mode...
Warning: In index.html:37: Local variable for "serviceWorkerVersion" is deprecated. Use "{{flutter_service_worker_version}}" template
token instead.
Warning: In index.html:46: "FlutterLoader.loadEntrypoint" is deprecated. Use "FlutterLoader.load" instead.
lib/main.dart:43:13: Error: No named parameter with the name 'backgroundColor'.
            backgroundColor: Colors.blueGrey[50],
            ^^^^^^^^^^^^^^^
../../../../flutter/packages/flutter/lib/src/material/theme_data.dart:268:11: Context: Found this candidate, but the arguments don't
match.
  factory ThemeData({
          ^
lib/widgets/message_left.dart:18:56: Error: The getter 'bodyText2' isn't defined for the class 'TextTheme'.
 - 'TextTheme' is from 'package:flutter/src/material/text_theme.dart'
 ('../../../../flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'bodyText2'.
    TextStyle? fontStyle = Theme.of(context).textTheme.bodyText2;
                                                       ^^^^^^^^^
lib/widgets/message_left.dart:75:28: Error: The getter 'caption' isn't defined for the class 'TextTheme'.
 - 'TextTheme' is from 'package:flutter/src/material/text_theme.dart'
 ('../../../../flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'caption'.
                          .caption!
                           ^^^^^^^
lib/widgets/message_left.dart:96:54: Error: The getter 'bodyText2' isn't defined for the class 'TextTheme'.
 - 'TextTheme' is from 'package:flutter/src/material/text_theme.dart'
 ('../../../../flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'bodyText2'.
                  style: Theme.of(context).textTheme.bodyText2!.apply(
                                                     ^^^^^^^^^
lib/widgets/message_right.dart:45:28: Error: The getter 'caption' isn't defined for the class 'TextTheme'.
 - 'TextTheme' is from 'package:flutter/src/material/text_theme.dart'
 ('../../../../flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'caption'.
                          .caption!
                           ^^^^^^^
lib/widgets/message_right.dart:66:54: Error: The getter 'bodyText2' isn't defined for the class 'TextTheme'.
 - 'TextTheme' is from 'package:flutter/src/material/text_theme.dart'
 ('../../../../flutter/packages/flutter/lib/src/material/text_theme.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'bodyText2'.
                  style: Theme.of(context).textTheme.bodyText2!.apply(
                                                     ^^^^^^^^^
Waiting for connection from debug service on Chrome...             13.5s
Failed to compile application.

Maybe it has to do with a change from Material 2 to Material 3?