update package:lints dep to 2.0.0

See: https://github.com/dart-lang/lints/issues/73.

Change-Id: I553ef8d9226c1c7d43c9594160a115a1abf043c3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/236841
Reviewed-by: Devon Carew <[email protected]>
Reviewed-by: Michael Thomsen <[email protected]>
Reviewed-by: Nate Bosch <[email protected]>
Commit-Queue: Phil Quitslund <[email protected]>

Author: pq

pkg/dartdev/lib/src/templates/console.dart

@@ -48,7 +48,7 @@ environment:
 #   path: ^1.8.0
 
 dev_dependencies:
-  lints: ^1.0.0
+  lints: ^2.0.0
   test: ^1.16.0
 ''';
 

pkg/dartdev/lib/src/templates/console_simple.dart

@@ -46,7 +46,7 @@ environment:
 #   path: ^1.8.0
 
 dev_dependencies:
-  lints: ^1.0.0
+  lints: ^2.0.0
 ''';
 
 final String _readme = '''

pkg/dartdev/lib/src/templates/package.dart

@@ -65,7 +65,7 @@ environment:
 #   path: ^1.8.0
 
 dev_dependencies:
-  lints: ^1.0.0
+  lints: ^2.0.0
   test: ^1.16.0
 ''';
 

pkg/dartdev/lib/src/templates/server_shelf.dart

@@ -54,7 +54,7 @@ dependencies:
 
 dev_dependencies:
   http: ^0.13.0
-  lints: ^1.0.0
+  lints: ^2.0.0
   test: ^1.15.0
 ''';
 
@@ -136,11 +136,11 @@ void main(List<String> args) async {
   final ip = InternetAddress.anyIPv4;
 
   // Configure a pipeline that logs requests.
-  final _handler = Pipeline().addMiddleware(logRequests()).addHandler(_router);
+  final handler = Pipeline().addMiddleware(logRequests()).addHandler(_router);
 
   // For running in containers, we respect the PORT environment variable.
   final port = int.parse(Platform.environment['PORT'] ?? '8080');
-  final server = await serve(_handler, ip, port);
+  final server = await serve(handler, ip, port);
   print('Server listening on port ${server.port}');
 }
 ''';
@@ -205,19 +205,19 @@ void main() {
   tearDown(() => p.kill());
 
   test('Root', () async {
-    final response = await get(Uri.parse(host + '/'));
+    final response = await get(Uri.parse('$host/'));
     expect(response.statusCode, 200);
     expect(response.body, 'Hello, World!\n');
   });
 
   test('Echo', () async {
-    final response = await get(Uri.parse(host + '/echo/hello'));
+    final response = await get(Uri.parse('$host/echo/hello'));
     expect(response.statusCode, 200);
     expect(response.body, 'hello\n');
   });
 
   test('404', () async {
-    final response = await get(Uri.parse(host + '/foobar'));
+    final response = await get(Uri.parse('$host/foobar'));
     expect(response.statusCode, 404);
   });
 }

pkg/dartdev/lib/src/templates/web.dart

@@ -54,7 +54,7 @@ environment:
 dev_dependencies:
   build_runner: ^2.1.4
   build_web_compilers: ^3.2.1
-  lints: ^1.0.0
+  lints: ^2.0.0
 ''';
 
 final String _readme = '''