audio_soloud: Simplify rebuild script (#2322)

## Pre-launch Checklist

- [x] I read the [Effective Dart: Style] _recently_, and have followed
its advice.
- [x] I signed the [CLA].
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-devrel
channel on [Discord].

<!-- Links -->
[Effective Dart: Style]:
https://dart.dev/guides/language/effective-dart/style
[CLA]: https://cla.developers.google.com/
[Discord]:
https://github.com/flutter/flutter/blob/master/docs/contributing/Chat.md

Author: domesticmouse

audio_soloud/codelab_rebuild.yaml

@@ -9,34 +9,22 @@ steps:
       - name: Strip DEVELOPMENT_TEAM
         strip-lines-containing: DEVELOPMENT_TEAM =
         path: audio_soloud/ios/Runner.xcodeproj/project.pbxproj
-      - name: Add dependencies and assets to pubspec.yaml
+      - name: Add dependencies
+        path: audio_soloud
+        flutter: pub add flutter_soloud logging
+      - name: Add assets to pubspec.yaml
         path: audio_soloud/pubspec.yaml
         patch-u: |
-          --- a/pubspec.yaml
-          +++ b/pubspec.yaml
-          @@ -10,6 +10,9 @@ dependencies:
-             flutter:
-               sdk: flutter
-
-          +  flutter_soloud: ^2.1.6
-          +  logging: ^1.2.0
-          +
-           dev_dependencies:
-             flutter_test:
-               sdk: flutter
-          @@ -17,3 +20,7 @@ dev_dependencies:
+          --- b/audio_soloud/step_02/pubspec.yaml
+          +++ a/audio_soloud/step_02/pubspec.yaml
+          @@ -19,3 +19,7 @@ dev_dependencies:
 
            flutter:
              uses-material-design: true
           +
           +  assets:
           +    - assets/music/
           +    - assets/sounds/
-
-      - name: Update dependencies
-        path: audio_soloud
-        flutter: pub upgrade --major-versions
-
       - name: Update iOS deployment target
         path: audio_soloud/ios/Podfile
         patch-u: |

audio_soloud/step_02/pubspec.yaml

@@ -4,14 +4,13 @@ publish_to: 'none'
 version: 0.1.0
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.8.1
 
 dependencies:
   flutter:
     sdk: flutter
-
   flutter_soloud: ^3.1.10
-  logging: ^1.2.0
+  logging: ^1.3.0
 
 dev_dependencies:
   flutter_test:

audio_soloud/step_03/pubspec.yaml

@@ -4,14 +4,13 @@ publish_to: 'none'
 version: 0.1.0
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.8.1
 
 dependencies:
   flutter:
     sdk: flutter
-
   flutter_soloud: ^3.1.10
-  logging: ^1.2.0
+  logging: ^1.3.0
 
 dev_dependencies:
   flutter_test:

audio_soloud/step_04a/pubspec.yaml

@@ -4,14 +4,13 @@ publish_to: 'none'
 version: 0.1.0
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.8.1
 
 dependencies:
   flutter:
     sdk: flutter
-
   flutter_soloud: ^3.1.10
-  logging: ^1.2.0
+  logging: ^1.3.0
 
 dev_dependencies:
   flutter_test:

audio_soloud/step_04b/pubspec.yaml

@@ -4,14 +4,13 @@ publish_to: 'none'
 version: 0.1.0
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.8.1
 
 dependencies:
   flutter:
     sdk: flutter
-
   flutter_soloud: ^3.1.10
-  logging: ^1.2.0
+  logging: ^1.3.0
 
 dev_dependencies:
   flutter_test:

audio_soloud/step_05/pubspec.yaml

@@ -4,14 +4,13 @@ publish_to: 'none'
 version: 0.1.0
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.8.1
 
 dependencies:
   flutter:
     sdk: flutter
-
   flutter_soloud: ^3.1.10
-  logging: ^1.2.0
+  logging: ^1.3.0
 
 dev_dependencies:
   flutter_test:

audio_soloud/step_06/pubspec.yaml

@@ -4,14 +4,13 @@ publish_to: 'none'
 version: 0.1.0
 
 environment:
-  sdk: ^3.8.0
+  sdk: ^3.8.1
 
 dependencies:
   flutter:
     sdk: flutter
-
   flutter_soloud: ^3.1.10
-  logging: ^1.2.0
+  logging: ^1.3.0
 
 dev_dependencies:
   flutter_test: