composer(deps-dev): bump phpstan/phpstan-phpunit from 0.12.16 to 0.12.17

Bumps [phpstan/phpstan-phpunit](https://github.com/phpstan/phpstan-phpunit) from 0.12.16 to 0.12.17.
- [Release notes](https://github.com/phpstan/phpstan-phpunit/releases)
- [Commits](phpstan/phpstan-phpunit@0.12.16...0.12.17)

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

composer.json

@@ -31,9 +31,9 @@
     "ergebnis/phpstan-rules": "~0.15.2",
     "ergebnis/test-util": "^1.4.0",
     "phpstan/extension-installer": "^1.0.5",
-    "phpstan/phpstan": "~0.12.52",
+    "phpstan/phpstan": "~0.12.64",
     "phpstan/phpstan-deprecation-rules": "~0.12.6",
-    "phpstan/phpstan-phpunit": "~0.12.16",
+    "phpstan/phpstan-phpunit": "~0.12.17",
     "phpstan/phpstan-strict-rules": "~0.12.5",
     "phpunit/phpunit": "^8.5.8",
     "psalm/plugin-phpunit": "~0.12.2",