fix phpstan src check

Author: dbu

.github/workflows/static.yml

@@ -10,13 +10,15 @@ jobs:
  phpstan-src:
  name: PHPStan src
  runs-on: ubuntu-latest
+ env:
+ REQUIRE_DEV: "true"
 
  steps:
  - name: Checkout code
  uses: actions/checkout@v2
 
  - name: Pull in optional dependencies
- run: composer require --no-update symfony/http-kernel symfony/event-dispatcher symfony/process phpunit/phpunit toflar/psr6-symfony-http-cache-store:^3.0
+ run: composer require --no-update phpunit/phpunit toflar/psr6-symfony-http-cache-store:^3.0
 
  - name: PHPStan
  uses: docker://oskarstark/phpstan-ga