Bump phpstan/phpstan-strict-rules from 0.12.2 to 0.12.3 in /dev-tools

Bumps [phpstan/phpstan-strict-rules](https://github.com/phpstan/phpstan-strict-rules) from 0.12.2 to 0.12.3.
- [Release notes](https://github.com/phpstan/phpstan-strict-rules/releases)
- [Commits](phpstan/phpstan-strict-rules@0.12.2...0.12.3)

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

dev-tools/composer.json

@@ -7,7 +7,7 @@
         "mi-schi/phpmd-extension": "^4.3.0",
         "phpmd/phpmd": "^2.8.2",
         "phpstan/phpstan": "^0.12.32",
-        "phpstan/phpstan-strict-rules": "^0.12.2",
+        "phpstan/phpstan-strict-rules": "^0.12.3",
         "squizlabs/php_codesniffer": "^3.5.5",
         "vimeo/psalm": "^3.12.2",
         "kubawerlos/php-cs-fixer-config": "^1.3.0"