Update packages (#382)

 - phpstan/phpstan updated from 1.11.8 to 1.11.9 patch
   See changes: phpstan/phpstan@1.11.8...1.11.9
   Release notes: https://github.com/phpstan/phpstan/releases/tag/1.11.9
   Replace #379

 - phpstan/phpstan-nette updated from 1.3.3 to 1.3.5 patch
   See changes: phpstan/phpstan-nette@1.3.3...1.3.5
   Release notes: https://github.com/phpstan/phpstan-nette/releases/tag/1.3.5
   Replace #380

 - roave/security-advisories updated from dev-latest@0816697 to dev-latest@25b3df9
   See changes: Roave/SecurityAdvisories@0816697...25b3df9