Bump symfony/flex from 1.13.3 to 1.13.4
Bump symfony/flex from 1.13.3 to 1.13.4

Bumps [symfony/flex](https://github.com/symfony/flex) from 1.13.3 to 1.13.4.
- [Release notes](https://github.com/symfony/flex/releases)
- [Commits](https://github.com/symfony/flex/compare/v1.13.3...v1.13.4)

---
updated-dependencies:
- dependency-name: symfony/flex
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
j0k3r/f43.me,j0k3r/f43.me,j0k3r/f43.me