GraphQL: remove deprecated method of decoding cursors

See merge request gitlab-org/gitlab!20496

Doc jts stable assignment

Closes gitlab-com/gl-infra/delivery#178

See merge request gitlab-org/gitlab!20651

* In rare cases we open Merge Requests targeting stable branches
* When this occurs Maintainers are not allowed to merge these, only
Release Managers
* This commits drops a note indicating what is done in these cases

GraphQL: Whilelist Enum types for rubocop in authorize_types.rb

See merge request gitlab-org/gitlab!20580

when checking for authorization

Make "Learn more about" links for security scanning popovers open in new tab

Closes #13333

See merge request gitlab-org/gitlab!20600

Add possibility to save a max issue weight on lists

See merge request gitlab-org/gitlab!19220

Remove var from text_markdown.js

Closes #36284

See merge request gitlab-org/gitlab!20093

Document how to enable Crosplane with feature flag

See merge request gitlab-org/gitlab!20586

Fix Crossplane help link

See merge request gitlab-org/gitlab!20668

Add deprecation note to required pipeline config

Closes #34350

See merge request gitlab-org/gitlab!20626

Encoded groupId so project path works

See merge request gitlab-org/gitlab!20646

Resolve "LaTeX math syntax interpreted as Markdown in IPython notebooks"

Closes #19397

See merge request gitlab-org/gitlab!19533

Gloabl katex refers to code in
app/assets/javascripts/blob/notebook/index.js (lines 23 and 30) which
looks for references to katex urls on the gon object. Such urls don't
exist. They can be hard coded via additions into gon_helper.rb but this
doesn't seem sensible.

Fix broken anchor path for CI configuration docs

See merge request gitlab-org/gitlab!20607

Improve query there is specified visibility_level

See merge request gitlab-org/gitlab!20594

Shellcheck - Use stable image

See merge request gitlab-org/gitlab!20681

Update serverless aws documentation

See merge request gitlab-org/gitlab!19904

When the function is to be deployed to AWS with Serverless Framework

Enable frozen string for spec/lib/gitlab/i18n

See merge request gitlab-org/gitlab!20669

The latest image sometimes has bugs, etc.

Test for exporting issues as CSV

Closes gitlab-org/quality/testcases#179

See merge request gitlab-org/gitlab!20482

Partially addresses:

https://gitlab.com/gitlab-org/gitlab/issues/27703

Enable frozen string for spec/lib/gitlab/graphql

See merge request gitlab-org/gitlab!20593

Enable frozen string for hook data specs

See merge request gitlab-org/gitlab!20602

Enable frozen string for grape logging specs

See merge request gitlab-org/gitlab!20596

Enable frozen string for spec/lib/gitlab/graphs

See merge request gitlab-org/gitlab!20584

Enable frozen string for spec/lib/gitlab/legacy_github_import

See merge request gitlab-org/gitlab!20582

Enable frozen string for spec/lib/gitlab/health_checks

See merge request gitlab-org/gitlab!20570

This also DRYs up the two calls to current_user.authorized_projects.

Clarify code comment

This becomes especially bad in this query from /api/v4/projects
endpoint:

```
SELECT COUNT(*)
FROM
  (SELECT 1 AS one
   FROM "projects"
   WHERE (EXISTS
            (SELECT 1
             FROM "project_authorizations"
             WHERE "project_authorizations"."user_id" = 1
               AND (project_authorizations.project_id = projects.id)
            )
            OR projects.visibility_level IN (10,20)
          )
     AND "projects"."visibility_level" = 0
     AND "projects"."pending_delete" = FALSE
   LIMIT 10001) subquery_for_count
```

Note we attempt to limit the damage with `LIMIT 10001` but Postgres
keeps trying to find any row that will match the impossible visiblity
level combination of (10,20) & (0), which goes way beyond 10001 rows.

So we omit the OR in the case where we encounter a visibility level
set which is null.