Bump doctrine/orm from 3.5.6 to 3.5.7

Bumps [doctrine/orm](https://github.com/doctrine/orm) from 3.5.6 to 3.5.7.
- [Release notes](https://github.com/doctrine/orm/releases)
- [Commits](doctrine/orm@3.5.6...3.5.7)

---
updated-dependencies:
- dependency-name: doctrine/orm
  dependency-version: 3.5.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]