Some installations somehow gained duplicate indexes on
ci_trigger_requests.trigger_id.

As a result, upgrading to GitLab 12.4.0 may cause this error:

```
ArgumentError: Multiple indexes found on ci_trigger_requests columns
[:trigger_id]. Specify an index name from
ci_trigger_requests_trigger_id_idx, fk_rails_b8ec8b7245,
index_ci_trigger_requests_on_trigger_id
```

This error comes from ActiveRecord's `index_name_for_remove`. This
method raises this exception if the `remove_index` is ambiguous.

Since our end state is to remove all indexes on
`ci_trigger_requests.trigger_id`, find the indexes that have this
signature and pass in an explicit `name` to disambiguate the index to
drop.

Closes https://gitlab.com/gitlab-org/gitlab/issues/34818

De-quarantined an end-to-end test

Closes gitlab-org/quality/nightly#146

See merge request gitlab-org/gitlab!18941

Merge branch '34214-consider-changing-the-schedule-package-and-qa-notify-jobs-to-notify-at-the-end-of-the-whole-pipeline-instead-of-just-after-schedule-package-and-qa' into 'master'

Remove `schedule:package-and-qa:notify*` jobs

Closes #34214

See merge request gitlab-org/gitlab!18861

Sort wiki pages by date

See merge request gitlab-org/gitlab!16172

This uses an intermediate index to transform the function from `O(n^2)`
to `O(n.logn)`, which will be very important for large wikis with lots
of directories, which is definitely something we want to support.

Update index.md - Corrected typo (GMF to GFM)

See merge request gitlab-org/gitlab!18937

Increased deactivation threshold to 180 days

Closes #34692

See merge request gitlab-org/gitlab!18902

Environments dashboard ux tweaks

See merge request gitlab-org/gitlab!18280

Improve Merge when pipeline succeeds docs

Closes #34298

See merge request gitlab-org/gitlab!18776

- Crosslink to push_options.md
- Include example and alias for push options

Add pendo javascript snippet

See merge request gitlab-org/gitlab!15086

 - We want to track using 3rd party product pendo.
 - This change will allow it to apply to every page, will need
   to backport the head file changes to CE as well

Skip pendo during testing

- I am unsure if this will cover all testing, but will cover rspec

Fix pendo tracking stub

Use feature flag stub helper

- reuse current helpers to help organize code
- resolve new line issue on pendo partial

Remove binding

Add config for pendo api settings and tests

Remove use of needless constant in pendo tracker

Update to be inline with snowplow implementation

Add pendo to the integration settings admin area

MVC docs for new keyword

See merge request gitlab-org/gitlab!18638

Handle multiple entries in the DAST report artifact,  Add specs for legacy DAST report

See merge request gitlab-org/gitlab!17779

Add logging to track events in Kibana

Add changelog entry

Resolve "Error 502 when viewing  billing page after trial ends"

See merge request gitlab-org/gitlab!18740

Fixes a regression which appeared since august 16, 2019.
Users on trial can't access their personal or group billing pages
after their trials expire. Adds tests for the trial views.
Added view tests as trial flow is business critical

Upgrade flipper gem to support Rails 6

See merge request gitlab-org/gitlab!18903

Ignore deprecated column and remove references to it

Closes #14770

See merge request gitlab-org/gitlab!18911

Query backend for tasks by type chart

Closes #32454

See merge request gitlab-org/gitlab!17944

Query for getting counts by date for Issue or MergeRequest records
within a group. This query object is going to be used for the tasks
by type chart.

Update dependency @gitlab/ui to v6

See merge request gitlab-org/gitlab!18952

Add missing spec coverage for instance clusters

See merge request gitlab-org/gitlab!18930

Apply correctly the limit of 10 designs per upload

See merge request gitlab-org/gitlab!18819

Migrate table_pagination specs to Jest & VTU

See merge request gitlab-org/gitlab!18698

Updated database reviewer role steps

See merge request gitlab-org/gitlab!18711

Update dependency @gitlab/svgs to ^1.79.0

See merge request gitlab-org/gitlab!18887

Update GitLab Runner Helm Chart to 0.10.0/12.4.0

See merge request gitlab-org/gitlab!18879

Remove CE/EE references from i18n merge docs

See merge request gitlab-org/gitlab!18931

Before, the commit ref would be pushed down, and things wouldn't line
up.

Now there is sufficient space for branch names that truncate.

Also show if a deployment is due to a tag or not.

Also show avatars for commits not made by GitLab users.

Remove the Geo Clone Modal

Closes #14785

See merge request gitlab-org/gitlab!18897

Update gitlab_rails_cheat_sheet.md

See merge request gitlab-org/gitlab!18803

Make SAST compatible with private dependencies via ENV propagation

See merge request gitlab-org/gitlab!18193

Enable the propagation of all of the job ENV
vars to the sast docker container and thus to
the analyzer containers being started by it.
This enables passing credentials for private
repos being accessed by underlying analyzers
via UI-set environment variables. Exclude a
bunch of system-related ENV vars from
propagation.