- adds `allowed_path` to strong validate `LegacyReader`
  and `LegacyWriter`
- does not change any of todays behaviour for data serialization
- makes the interface for reader and writer to accept
  `importable/exportable_path` that will be used by `ndjson`
  to store data in separate files
- moves consuming of attributes outside of the relation tree restorer
  to ease the way how we process them
- splits specs for `LegacyReader::User/File` and introduces
  shared example for that: this is also the majority of changes
  introduced by this MR in order to move them
- slightly code-formats and re-organises group and project
  import/export

Add feature flag to highest role callback

See merge request gitlab-org/gitlab!28105

Docs: Create MR from a fork

Closes #199227

See merge request gitlab-org/gitlab!28111

Docs add packages url to updates

See merge request gitlab-org/gitlab!27762

Remove forward npm package request feature flag

See merge request gitlab-org/gitlab!27987

Updated text to stress importance of the requirements

See merge request gitlab-org/gitlab!27027

Add language around Cloudflare IPs

See merge request gitlab-org/gitlab!28010

See https://about.gitlab.com/blog/2020/01/16/gitlab-changes-to-cloudflare/ for details.

Update GitLab Runner Helm Chart to 0.15.0/12.9.0

See merge request gitlab-org/gitlab!27670

Put the update highest role callback for Members behind a feature flag
because there needs to be an additional callback when a User does not
count as active anymore.

Resolve "Sourcegraph documentation"

Closes #211595

See merge request gitlab-org/gitlab!27454

Migrate users.bio to user_details.bio

Closes #206913

See merge request gitlab-org/gitlab!27773

Check for plans in update all mirrors worker

See merge request gitlab-org/gitlab!27796

PyPI: API skeleton and authentication

See merge request gitlab-org/gitlab!27030

Update colors and switch filters with counts

See merge request gitlab-org/gitlab!27791

Add #resolved_on_default_branch to Vulnerability

See merge request gitlab-org/gitlab!26906

Add status column for export vulnerability findings

See merge request gitlab-org/gitlab!27935

Rename badge to pins design management docs

See merge request gitlab-org/gitlab!25214

Remove conditional assignment

See merge request gitlab-org/gitlab!27960

Unified Edit form JS handling for Project and Personal snippets

See merge request gitlab-org/gitlab!28041

Add issues importer

See merge request gitlab-org/gitlab!27229

Fix SSH architecture diagram

See merge request gitlab-org/gitlab!28031

Merge branch '211456-admin-sessionscontroller-create-cannot-execute-update-in-a-read-only-transaction' into 'master'

Does not write to DB when using 2FA via OTP for admin mode

Closes #211456

See merge request gitlab-org/gitlab!27450

With this change we do not allow backup tokens
for admin mode in read-only replicas.

Use Gitlab::HTTP.try_get to find commit_status from Bamboo CI

See merge request gitlab-org/gitlab!27893

Add related class to reactive caching worker

See merge request gitlab-org/gitlab!27687

Remove ci_drop_bridge_on_downstream_errors flag

Closes #207948

See merge request gitlab-org/gitlab!27906

Add graphql api for querying jira imports and jira import status

See merge request gitlab-org/gitlab!27587

Import jira issues by scheduling a sidekiq job for each issue to
be imported.

- The evaluation property of an attribute was never used

This adds the `meta.related_class` keyword to the job hash. This will
make it easier to determine what different kinds of work this worker
is doing.

This includes the new related_class field.

Fix remove_concurrent_index down methods

See merge request gitlab-org/gitlab!28029

Align Vuex Store to New Version Feature Flags

See merge request gitlab-org/gitlab!28048

This change migrates users.bio to user_details.bio.

Add ability to query list of jira imports for a project.
I will return a list of imports containing jira project key,
when the import was scheduled and who scheduled the import.

Update user highest roles table

See merge request gitlab-org/gitlab!27231