[2.4.0] Release branch cut. (dmlc#7738)

[release] update version (dmlc#7488)

Release version 2.2.1

[doc] use tqdm from tqdm.auto (dmlc#7191)

[Graphbolt]Fix negative sampler (dmlc#6933) (dmlc#6938)

Co-authored-by: peizhou001 <110809584+peizhou001@users.noreply.github.com>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-21-218.ap-northeast-1.compute.internal>

use cccl (dmlc#6694)

1.1.x candidate (dmlc#6155)

Co-authored-by: Hongzhi (Steve), Chen <chenhongzhi.nkcs@gmail.com>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-28-63.ap-northeast-1.compute.internal>

bump tag to 1.1.1

[Release] Modify release version to 1.1.0

Merge branch '1.0.x' of github.com:dmlc/dgl into 1.0.x