Build(deps-dev): bump contributte/phpstan from 0.1.0 to 0.2

Bumps [contributte/phpstan](https://github.com/contributte/phpstan) from 0.1.0 to 0.2.
- [Release notes](https://github.com/contributte/phpstan/releases)
- [Commits](contributte/phpstan@v0.1.0...v0.2.0)

---
updated-dependencies:
- dependency-name: contributte/phpstan
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

composer.json

@@ -19,7 +19,7 @@
     "contributte/qa": "^0.3",
     "contributte/dev": "^0.5",
     "contributte/tester": "^0.3",
-    "contributte/phpstan": "^0.1"
+    "contributte/phpstan": "^0.2"
   },
   "autoload": {
     "psr-4": {