Update dependency brick/varexporter to ^0.6

| datasource | package           | from  | to    |
| ---------- | ----------------- | ----- | ----- |
| packagist  | brick/varexporter | 0.5.0 | 0.6.0 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -44,7 +44,7 @@
         "webmozart/assert": "^1.9"
     },
     "require-dev": {
-        "brick/varexporter": "^0.5",
+        "brick/varexporter": "^0.6",
         "laminas/laminas-coding-standard": "~3.0.1",
         "laminas/laminas-diactoros": "^2.25.2 || ^3.5",
         "laminas/laminas-router": "^3.14",