NFS deprecation docs

Closes gitaly#2663

See merge request gitlab-org/gitlab!31427

json gem upgrade to 2.3.0

See merge request gitlab-org/gitlab!30852

A Gitaly Cluster can be used instead of NFS. For transparencey and
unambiguous communication, NFS for Gitaly has been deprecated to avoid
any customers investing further in NFS configurations or hardward for
the purpose of Git storage.

Merge branch '217658-rename-vulnerabilities-occurrencespreloader-to-vulnerabilities-findingspreloader' into 'master'

Rename Vulnerabilities::OccurrencesPreloader to FindingsPreloader

See merge request gitlab-org/gitlab!31982

Add an action that dynamically upgrades a `renamed`-type diff to its full content

See merge request gitlab-org/gitlab!30797

Return the promise and rethrow the error
so that other consumers can also respond
to potential errors

Don't load package to fetch the id

See merge request gitlab-org/gitlab!31882

Object Storage can't replace NFS for Gitaly

See merge request gitlab-org/gitlab!32029

Cross-link Gitaly Cluster for HA

See merge request gitlab-org/gitlab!32028

Gitaly requires block storage, and fast IO. This isn't what object
storage provides. Furthermore, the linked object storage docs do not
provide any information about how one would even use object storage in
this way.

Rename Praefect High Availability to Gitaly Cluster

See merge request gitlab-org/gitlab!31824

High Availability is property of a system, and is confusing when used
as the name of a feature. Particularly it is confusing given there are
multiple aspects to making a GitLab instance HA.

Additionally, the work we are doing on Gitaly and Praefect is not
exclusively for High Availability. A clustered configuration will
provide performance improvements in the future.

Add new deploy token scopes to front end

See merge request gitlab-org/gitlab!31267

Mention minimal Git version for partial clone

See merge request gitlab-org/gitlab!31708

Add rubocop for AR exists? and present?/blank?

See merge request gitlab-org/gitlab!31095

Add email notification on group export complete

See merge request gitlab-org/gitlab!30522

Remove alert detail status dropdown

See merge request gitlab-org/gitlab!31998

Updated doorkeeper to 5.0.3 and ran bundle update doorkeeper to update Gemfile.lock

Closes #217396

See merge request gitlab-org/gitlab!31673

Project access token specific scope descriptions

See merge request gitlab-org/gitlab!31667

Render severity on alert management list view

See merge request gitlab-org/gitlab!31993

This reverts commit 3aeef74f, reversing
changes made to e81e51d5.

Replace undefined confidence with unknown severity for vulnerabilities

See merge request gitlab-org/gitlab!31593

Stop testing against PostgreSQL 9.6 and 10

Closes #215493

See merge request gitlab-org/gitlab!31914

[ci skip]

[ci skip]

Improve test coverage of content_viewer module

See merge request gitlab-org/gitlab!31628

Link to Auto DevOps technical walk-through video

See merge request gitlab-org/gitlab!31674

Add index for large set of data
Add test for testing data

Documentation for % of actors rollout

See merge request gitlab-org/gitlab!29697

Time.now => Time.current in controllers

See merge request gitlab-org/gitlab!31578

Add Web IDE pipelines usage counts

See merge request gitlab-org/gitlab!31658

Added new web_ide_pipelines_count action to the
Projects::UsagePingController since it will be used only to track the
interactions with the Pipelines tab in the WebIDE.

Move features to core: "Issue Board Focus Mode"

See merge request gitlab-org/gitlab!29200

Add api to lookup epics by reaction emoji

See merge request gitlab-org/gitlab!31479

- Add my_reaction_emoji lookup to epics finder
- Add option to epics api and docs
- Migrated epics_finder_spec to use let_it_be

Relates to https://gitlab.com/gitlab-org/gitlab/issues/7783