Bump symfony/process from 3.4.24 to 3.4.26
Bump symfony/process from 3.4.24 to 3.4.26

Bumps [symfony/process](https://github.com/symfony/process) from 3.4.24 to 3.4.26.
- [Release notes](https://github.com/symfony/process/releases)
- [Changelog](https://github.com/symfony/process/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/process/compare/v3.4.24...v3.4.26)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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