composer(deps): bump jetbrains/phpstorm-stubs from 2025.3 to 2026.1

Bumps [jetbrains/phpstorm-stubs](https://github.com/JetBrains/phpstorm-stubs) from 2025.3 to 2026.1.
- [Release notes](https://github.com/JetBrains/phpstorm-stubs/releases)
- [Commits](JetBrains/phpstorm-stubs@v2025.3...v2026.1)

---
updated-dependencies:
- dependency-name: jetbrains/phpstorm-stubs
  dependency-version: '2026.1'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

composer.json

@@ -40,7 +40,7 @@
         "composer-runtime-api": "^2.2",
         "composer/class-map-generator": "^1.0",
         "google/protobuf": "^5.34",
-        "jetbrains/phpstorm-stubs": "^2025.3",
+        "jetbrains/phpstorm-stubs": "^2026.1",
         "nikic/php-parser": "^5.0",
         "phpstan/phpdoc-parser": "^2.3"
     },