```release-note:enhancement
resource/aws_codepipeline_webhook: Add plan time validation for `authentication_configuration.secret_token`, `filter.json_path`, `filter.match_equals`, `name`.
```

```release-note:enhancement
resource/aws_codepipeline_webhook: Add `arn` attribute.
```

```release-note:enhancement
resource/aws_codepipeline_webhook: Allow updating `filter` in place.
```