build(deps-dev): bump phpstan/phpstan-symfony from 1.4.6 to 1.4.7 (#2027

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Bumps [phpstan/phpstan-symfony](https://github.com/phpstan/phpstan-symfony) from 1.4.6 to 1.4.7.
- [Release notes](https://github.com/phpstan/phpstan-symfony/releases)
- [Commits](phpstan/phpstan-symfony@1.4.6...1.4.7)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>