chore(deps-dev): bump @wordpress/browserslist-config from 6.8.0 to 6.9.0

Bumps [@wordpress/browserslist-config](https://github.com/WordPress/gutenberg/tree/HEAD/packages/browserslist-config) from 6.8.0 to 6.9.0.
- [Release notes](https://github.com/WordPress/gutenberg/releases)
- [Changelog](https://github.com/WordPress/gutenberg/blob/trunk/packages/browserslist-config/CHANGELOG.md)
- [Commits](https://github.com/WordPress/gutenberg/commits/@wordpress/browserslist-config@6.9.0/packages/browserslist-config)

---
updated-dependencies:
- dependency-name: "@wordpress/browserslist-config"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -46,7 +46,7 @@
 	},
 	"devDependencies": {
 		"@rushstack/eslint-patch": "^1.10.4",
-		"@wordpress/browserslist-config": "^6.8.0",
+		"@wordpress/browserslist-config": "^6.9.0",
 		"eslint": "^8.57.0",
 		"lint-staged": "^15.2.10",
 		"newspack-scripts": "^5.5.2",