Update phpstan/phpstan requirement from 1.10.25 to 1.10.26

Updates the requirements on [phpstan/phpstan](https://github.com/phpstan/phpstan) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/1.11.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.10.25...1.10.26)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
...

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

composer.json

@@ -45,7 +45,7 @@
         "friendsofphp/php-cs-fixer": "^3.0",
         "guzzlehttp/guzzle": "^7.1",
         "http-interop/http-factory-guzzle": "^1.0",
-        "phpstan/phpstan": "1.10.25",
+        "phpstan/phpstan": "1.10.26",
         "phpstan/extension-installer": "^1.1",
         "phpstan/phpstan-strict-rules": "^1.1",
         "phpstan/phpstan-phpunit": "^1.0",