composer(deps-dev): bump phpstan/phpstan from 0.12.96 to 0.12.97

Bumps [phpstan/phpstan](https://github.com/phpstan/phpstan) from 0.12.96 to 0.12.97.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Commits](phpstan/phpstan@0.12.96...0.12.97)

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

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

composer.json

@@ -28,7 +28,7 @@
     "infection/infection": "~0.15.3",
     "jangregor/phpstan-prophecy": "~0.8.1",
     "phpstan/extension-installer": "^1.1.0",
-    "phpstan/phpstan": "~0.12.96",
+    "phpstan/phpstan": "~0.12.97",
     "phpstan/phpstan-deprecation-rules": "~0.12.6",
     "phpstan/phpstan-phpunit": "~0.12.22",
     "phpstan/phpstan-strict-rules": "~0.12.11",