Update composer.json
Update composer.json

Updated composer.json with datagrid dependency to meet page-bundle requirements
vihuvac/sandbox,tophsic/sandbox,morilog/sandbox,4devs/sonata-sandbox,nlzet/sandbox,cbastienbaron/sandbox,cbastienbaron/sandbox,tophsic/sandbox,nlzet/sandbox,vihuvac/sandbox,nlzet/sandbox,vihuvac/sandbox,cbastienbaron/sandbox,tophsic/sandbox,morilog/sandbox,volodymyr-nakvasiuk/sandbox,volodymyr-nakvasiuk/sandbox,gabrielalmeida/sonata-sandbox,OskarStark/sandbox,morilog/sandbox,vihuvac/sandbox,tophsic/sandbox,4devs/sonata-sandbox,4devs/sonata-sandbox,volodymyr-nakvasiuk/sandbox,cbastienbaron/sandbox,gabrielalmeida/sonata-sandbox,OskarStark/sandbox,morilog/sandbox,gabrielalmeida/sonata-sandbox,volodymyr-nakvasiuk/sandbox,OskarStark/sandbox,4devs/sonata-sandbox