Add `topics` to package intl `pubspec.yaml`

[szakarias]

Topics help users on pub.dev discover packages and related packages.

You can see a list of topics here. You can also make your own topics.

Topics are added to pubspec.yaml as follows:

 - my-topic
 - some-other-topic

See also: https://dart.dev/tools/pub/pubspec#topics

[github-actions[bot]]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:intl4x	0.9.0	ready to publish	intl4x-v0.9.0
package:intl	0.20.0-wip	WIP (no publish necessary)
package:intl_translation	0.20.1-wip	WIP (no publish necessary)
package:messages	0.2.0	already published at pub.dev
package:messages_builder	0.2.1	already published at pub.dev
package:messages_serializer	0.2.1	already published at pub.dev
package:messages_shrinker	0.2.2-wip	WIP (no publish necessary)

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

[github-actions[bot]]

PR Health

Breaking changes :heavy_check_mark:

Details

| Package | Change | Current Version | New Version | Needed Version | Looking good? | | :--- | :--- | ---: | ---: | ---: | ---: | |intl|None|0.20.0-wip|0.20.0-wip|0.20.0-wip|:heavy_check_mark:|

Changelog Entry :heavy_check_mark:

Details

| Package | Changed Files | | :--- | :--- | Changes to files need to be [accounted for](https://github.com/dart-lang/ecosystem/wiki/Changelog) in their respective changelogs.

Coverage :heavy_check_mark:

Details

| File | Coverage | | :--- | :--- | This check for [test coverage](https://github.com/dart-lang/ecosystem/wiki/Test-Coverage) is informational (issues shown here will not fail the PR).

API leaks :warning:

Details

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API. | Package | Leaked API symbols | | :--- | :--- | |intl|_DateFormatField
StringStack
DateBuilder| This check can be disabled by tagging the PR with `skip-leaking-check`.

License Headers :heavy_check_mark:

Details

``` // Copyright (c) 2024, 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_ | All source files should start with a [license header](https://github.com/dart-lang/ecosystem/wiki/License-Header).

Package publish validation :heavy_check_mark:

Details

| Package | Version | Status | | :--- | ---: | :--- | | package:intl4x | 0.9.0 | **ready to publish** | | package:intl | 0.20.0-wip | WIP (no publish necessary) | | package:intl_translation | 0.20.1-wip | WIP (no publish necessary) | | package:messages | 0.2.0 | already published at pub.dev | | package:messages_builder | 0.2.1 | already published at pub.dev | | package:messages_serializer | 0.2.1 | already published at pub.dev | | package:messages_shrinker | 0.2.2-wip | WIP (no publish necessary) | Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[szakarias]

@mosuem Do you know whether this changed should be applied in Google3 first?

[mosuem]

Yes, PRs here are merged automatically by copybara after being approved in g3.