update flutter create generated projects to use package:flutter_lints 5.0.0 (#156011)

- update flutter create generated projects to use package:flutter_lints
5.0.0; this is a follow-up to publishing `package:flutter_lints` 5.0.0

- related to https://github.com/dart-lang/lints/issues/205

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

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

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

packages/flutter_tools/templates/app/pubspec.yaml.tmpl

@@ -14,7 +14,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^4.0.0
+  flutter_lints: ^5.0.0
 
 flutter:
   uses-material-design: true
@@ -52,8 +52,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-
 {{#withPluginHook}}
+
   {{pluginProjectName}}:
     # When depending on this package from a real application you should use:
     #   {{pluginProjectName}}: ^x.y.z
@@ -80,7 +80,7 @@ dev_dependencies:
   # 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: ^4.0.0
+  flutter_lints: ^5.0.0
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

packages/flutter_tools/templates/module/common/pubspec.yaml.tmpl

@@ -31,7 +31,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^4.0.0
+  flutter_lints: ^5.0.0
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

packages/flutter_tools/templates/package/lib/projectName.dart.tmpl

@@ -1,5 +1,3 @@
-library {{projectName}};
-
 /// A Calculator.
 class Calculator {
   /// Returns [value] plus 1.

packages/flutter_tools/templates/package/pubspec.yaml.tmpl

@@ -14,7 +14,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^4.0.0
+  flutter_lints: ^5.0.0
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

packages/flutter_tools/templates/package_ffi/pubspec.yaml.tmpl

@@ -15,5 +15,5 @@ dependencies:
 dev_dependencies:
   ffi: ^2.1.3
   ffigen: ^13.0.0
-  flutter_lints: ^4.0.0
+  flutter_lints: ^5.0.0
   test: ^1.25.8

packages/flutter_tools/templates/plugin_shared/pubspec.yaml.tmpl

@@ -24,7 +24,7 @@ dev_dependencies:
 {{/withFfi}}
   flutter_test:
     sdk: flutter
-  flutter_lints: ^4.0.0
+  flutter_lints: ^5.0.0
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

packages/flutter_tools/templates/skeleton/pubspec.yaml.tmpl

@@ -19,7 +19,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
 
-  flutter_lints: ^4.0.0
+  flutter_lints: ^5.0.0
 
 flutter:
   uses-material-design: true