Bump the development-dependencies group across 1 directory with 2 updates

Bumps the development-dependencies group with 2 updates in the / directory: [wp-coding-standards/wpcs](https://github.com/WordPress/WordPress-Coding-Standards) and [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit).


Updates `wp-coding-standards/wpcs` from 3.3.0 to 3.4.0
- [Release notes](https://github.com/WordPress/WordPress-Coding-Standards/releases)
- [Changelog](https://github.com/WordPress/WordPress-Coding-Standards/blob/develop/CHANGELOG.md)
- [Commits](WordPress/WordPress-Coding-Standards@3.3.0...3.4.0)

Updates `phpunit/phpunit` from 9.6.33 to 13.2.4
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/13.2.4/ChangeLog-13.2.md)
- [Commits](sebastianbergmann/phpunit@9.6.33...13.2.4)

---
updated-dependencies:
- dependency-name: wp-coding-standards/wpcs
  dependency-version: 3.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development-dependencies
- dependency-name: phpunit/phpunit
  dependency-version: 13.2.4
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: development-dependencies
...

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

Author: dependabot[bot]

composer.json

@@ -30,7 +30,7 @@
 		}
 	},
 	"require-dev": {
-		"wp-coding-standards/wpcs": "^3.0",
-		"phpunit/phpunit": "^9"
+		"wp-coding-standards/wpcs": "^3.4",
+		"phpunit/phpunit": "^13"
 	}
 }