[http] prepare v1.3.0 release

[kevmoo]

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[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:http	1.3.0	ready to publish	http-v1.3.0
package:cronet_http	1.3.3-wip	WIP (no publish necessary)
package:cupertino_http	2.0.2	already published at pub.dev
package:http2	2.3.2-wip	WIP (no publish necessary)
package:http_multi_server	3.2.2	already published at pub.dev
package:http_parser	4.1.2	already published at pub.dev
package:http_profile	0.1.1-wip	WIP (no publish necessary)
package:ok_http	0.1.1-wip	WIP (no publish necessary)
package:web_socket	0.1.6	already published at pub.dev

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[github-actions]

PR Health

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Package	Changed Files

Changes to files need to be accounted for in their respective changelogs.

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API leaks ✔️

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License Headers ✔️

// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

Files
no missing headers

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Unrelated files missing license headers

Files
pkgs/http/example/main.dart
pkgs/http_client_conformance_tests/example/client_test.dart
pkgs/http_client_conformance_tests/lib/src/dummy_isolate.dart
pkgs/http_parser/test/example_test.dart
pkgs/http_profile/lib/http_profile.dart
pkgs/web_socket/example/web_socket_example.dart
pkgs/web_socket/lib/testing.dart
pkgs/web_socket_conformance_tests/example/client_test.dart