Chore(deps-dev): Bump nextcloud/coding-standard from 1.2.1 to 1.2.3

Bumps [nextcloud/coding-standard](https://github.com/nextcloud/coding-standard) from 1.2.1 to 1.2.3.
- [Release notes](https://github.com/nextcloud/coding-standard/releases)
- [Changelog](https://github.com/nextcloud/coding-standard/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nextcloud/coding-standard/compare/v1.2.1...v1.2.3)

---
updated-dependencies:
- dependency-name: nextcloud/coding-standard
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

tests/unit/Middleware/ExceptionMiddlewareTest.php

@@ -69,8 +69,8 @@ class ExceptionMiddlewareTest extends \Test\TestCase {
 	public function testAfterException($exception, $status, $message) {
 		$result = $this->exceptionMiddleware->afterException($this->controller, 'bar', $exception);
 		$expected = new JSONResponse([
-			"status" => $status,
-			"message" => $message
+			'status' => $status,
+			'message' => $message
 		], $status);
 		$this->assertEquals($expected, $result);
 	}