Remove Set-Cookie header from archive and raw blob responses

See merge request gitlab-org/gitlab-workhorse!475

CDNs don't cache responses with Set-Cookie header as they assume they
contain some sort of state or user-specific data, which is not the case for
raw blobs and repository archives.

This change allows GitLab installations that sit behind a CDN to benefit from its
caching feature seamlessly.

Related to https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6829
and https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/4

Release Workhorse v8.26.0

See merge request gitlab-org/gitlab-workhorse!472

Add route for project imports direct upload via UI

See merge request gitlab-org/gitlab-workhorse!470

Release v8.25.0

See merge request gitlab-org/gitlab-workhorse!471

Add route for project imports direct upload

See merge request gitlab-org/gitlab-workhorse!459

Prepare 8.24.0 release with Continuous Profiling

See merge request gitlab-org/gitlab-workhorse!469

Simple version bump to support
https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/461.

Add Stackdriver Profiler through Labkit

See merge request gitlab-org/gitlab-workhorse!461

This updates the labkit library and adds minimal changes
to the `monitoring.Serve` initialization, given the profiler
can be initialized without requiring Prometheus.

Add Alessio to the maintainers' list

See merge request gitlab-org/gitlab-workhorse!468

Test against go 1.12 - 1.14

See merge request gitlab-org/gitlab-workhorse!467

Add table explaining interaction between authBackend and authSocket

See merge request gitlab-org/gitlab-workhorse!463

Release v8.23.0

See merge request gitlab-org/gitlab-workhorse!465

Ignore toml files in project root

See merge request gitlab-org/gitlab-workhorse!464

Don't set Cache-Control header for git archives

See merge request gitlab-org/gitlab-workhorse!462

Rails already sets Cache-Control according to the project visibility.
Always setting the header value to `private` prevents us from doing
proper caching (e.g. at CDN level) for public projects.

Related to https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6829

Add CI jobs for dependency scanning and static analysis

See merge request gitlab-org/gitlab-workhorse!458

Prepare 8.22.0 release

See merge request gitlab-org/gitlab-workhorse!460

Add friendly development error page for 502

See merge request gitlab-org/gitlab-workhorse!453

Bump the version of golang.org/x/sys

Closes #246

See merge request gitlab-org/gitlab-workhorse!456

Release v8.21.0

See merge request gitlab-org/gitlab-workhorse!457

Add route for group imports direct upload

See merge request gitlab-org/gitlab-workhorse!455

Sign requests that go through direct_upload

See merge request gitlab-org/security/gitlab-workhorse!1