Update brick/varexporter requirement from ^0.5.0 to ^0.6.0

Updates the requirements on [brick/varexporter](https://github.com/brick/varexporter) to permit the latest version.
- [Release notes](https://github.com/brick/varexporter/releases)
- [Changelog](https://github.com/brick/varexporter/blob/master/CHANGELOG.md)
- [Commits](brick/varexporter@0.5.0...0.6.0)

---
updated-dependencies:
- dependency-name: brick/varexporter
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -21,7 +21,7 @@
     },
     "require": {
         "php": ">=8.1",
-        "brick/varexporter": "^0.5.0",
+        "brick/varexporter": "^0.6.0",
         "cakephp/cakephp": "^5.1",
         "cakephp/twig-view": "^2.0.0",
         "nikic/php-parser": "^5.0.0"