Bump phpdocumentor/reflection-docblock from 5.2.0 to 5.2.1
Bump phpdocumentor/reflection-docblock from 5.2.0 to 5.2.1

Bumps [phpdocumentor/reflection-docblock](https://github.com/phpDocumentor/ReflectionDocBlock) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/phpDocumentor/ReflectionDocBlock/releases)
- [Commits](https://github.com/phpDocumentor/ReflectionDocBlock/compare/5.2.0...5.2.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
sonata-project/sandbox,sonata-project/sandbox,sonata-project/sandbox