Bump doctrine/orm from 2.6.3 to 2.6.4
Bump doctrine/orm from 2.6.3 to 2.6.4

Bumps [doctrine/orm](https://github.com/doctrine/orm) from 2.6.3 to 2.6.4.
- [Release notes](https://github.com/doctrine/orm/releases)
- [Commits](https://github.com/doctrine/orm/compare/v2.6.3...v2.6.4)

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