Update dependency jetbrains/phpstorm-stubs to v2026

| datasource | package                  | from   | to     |
| ---------- | ------------------------ | ------ | ------ |
| packagist  | jetbrains/phpstorm-stubs | 2025.3 | 2026.1 |

Author: renovate[bot]

composer.json

@@ -5,7 +5,7 @@
     "require": {
         "php": "~8.4.1 || ~8.5.0",
         "ext-json": "*",
-        "jetbrains/phpstorm-stubs": "2025.3",
+        "jetbrains/phpstorm-stubs": "2026.1",
         "nikic/php-parser": "^5.7.0"
     },
     "authors": [