Bump symfony/flex from 1.1.1 to 1.1.6
Bump symfony/flex from 1.1.1 to 1.1.6

Bumps [symfony/flex](https://github.com/symfony/flex) from 1.1.1 to 1.1.6.
- [Release notes](https://github.com/symfony/flex/releases)
- [Commits](https://github.com/symfony/flex/compare/v1.1.1...v1.1.6)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alcohol/paste.robbast.nl,alcohol/sf-minimal-demo,alcohol/paste.robbast.nl,alcohol/paste.robbast.nl