Update changelog for 6.3.1 release (#591)

## [6.3.1] - 2025-10-08

### Fixed

- Applied empty accessibility traits to `AttributedLabel` if supplied
traits is `nil`.
- Fixed warning for a cross-module conformance
- Fixed warning by updating Package.swift to use the newer
`swiftLanguageModes`

chore: Release 6.3.0 (#586)

chore: Release 6.2.0 (#582)

Fix AccessibilityContainer behaviour when it contains a UICollectionV…

…iew or UITableView (#566)

chore: release 6.0.0 (#560)

5.7.0 (#552)

## [5.7.0] - 2025-05-16

### Added

- `AnimationAttributes` can now be initialized with more types of
animations, including bezier curves, springs, and dampened springs.

### Removed

- Removed `AnimationAttributes.curve`.
- Removed `AnimationAttributes.duration`.

### Changed

- Reverted the change titled "Fixed `AccessibilityContainer` to better
handle the accessibility ordering for a `UICollectionView` inside it
(such as a `Listable` instance.)" pending further investigation.

5.6.0 (#548)

## [5.6.0] - 2025-05-14

### Fixed
- Fixed `AccessibilityContainer` to better handle the accessibility
ordering for a `UICollectionView` inside it (such as a `Listable`
instance.)

Prepare release 5.5.0 (#546)

5.4.0 (#543)

## [5.4.0] - 2025-03-04

### Added

- `Accessibility.Trait` now includes `.backButton` and `.toggleButton`

### Changed

- `AccessibilityElement.Trait`now a typealias to `Accessibility.Trait` 
- `AccessibilityElement.CustomAction` now a typealias to
`Accessibility.CustomAction`
- `AccessibilityElement.CustomContent` now a typealias to
`Accessibility.CustomContent`

release: Blueprint 5.3.0 (#539)

https://github.com/square/Blueprint/blob/main/CHANGELOG.md

Post-merge steps:

- Once the PR is merged, fetch changes and tag the release, using the
merge commit:
  ```
  git fetch
  git tag 5.3.0 <merge commit SHA>
  git push origin 5.3.0
  ```

Then complete the steps outlined in
https://github.com/square/Blueprint/blob/main/RELEASING.md