Lock gRPC gem to 1.8

Closes gitaly#1059

See merge request gitlab-org/gitlab-ce!17484

Reload stable object to prevent erase artifacts with old state (Ver 2)

Closes #43641

See merge request gitlab-org/gitlab-ce!17522

perforce.md: add note about repacking

See merge request gitlab-org/gitlab-ce!17373

Resolve "Group Leave action is broken on Groups Dashboard and Homepage"

Closes #43299

See merge request gitlab-org/gitlab-ce!17183

Improve GitLab Kubernetes CPU metrics

Closes #43670 and #43462

See merge request gitlab-org/gitlab-ce!17403

Fix race condition when previewing docs

Closes gitlab-com/gitlab-docs#154 et #41024

See merge request gitlab-org/gitlab-ce!17552

Fix a changelog entry YAML to be consistent with EE

See merge request gitlab-org/gitlab-ce!17554

Given 1.9 has issues we're aware of, for now we're locking to 1.8.
Closes gitlab-org/gitaly#1059 and will probably be removed if 1.10 is
tested an deemed ok.

Remove default scope from todos

See merge request gitlab-org/gitlab-ce!17531

Resolve "Pipelines view should handle empty state and buttons properly"

Closes #38587

See merge request gitlab-org/gitlab-ce!17433

Cancel the pipeline that gets created the first time the remote
branch is created in order not to overwrite the one we trigger
afterwards.

Closes https://gitlab.com/gitlab-com/gitlab-docs/issues/154

Add checksum to ci_job_artifacts

Closes #43599

See merge request gitlab-org/gitlab-ce!17354

Resolve "Enable privileged mode for Runner installed on Kubernetes"

Closes #43793

See merge request gitlab-org/gitlab-ce!17528