Docs: dotenv post-merge review

Closes #210593

See merge request gitlab-org/gitlab!32693

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/210593

Add user story to FailFast template documentation

See merge request gitlab-org/gitlab!34779

Feature Flag should be enabled globally before it's removed from source code

See merge request gitlab-org/gitlab!34807

This commit clarifies the removal criteria

Update workers usage of Time.now => Time.current

See merge request gitlab-org/gitlab!35108

Add new label from gitlab-ui to issuables list labels

See merge request gitlab-org/gitlab!34334

Migrate `GlDeprecatedButton` to `GlButton`

See merge request gitlab-org/gitlab!34323

Skip non-project containers in Repository#project

See merge request gitlab-org/gitlab!35124

Merge branch '223866-update-telemetry-guide-to-to-state-feature-label-usage-and-adding-change-log' into 'master'

Update Telemetry guide to to state feature label usage and adding change log

Closes #223866

See merge request gitlab-org/gitlab!35144

  * Adding changelog file
  * Adding feature label

Fetch variable options from the Prometheus API to populate dropdown

See merge request gitlab-org/gitlab!34607

Geo: Add notice about "update" events to Geo framework guide

See merge request gitlab-org/gitlab!35178

Update Gitaly NFS deprecation note

See merge request gitlab-org/gitlab!35070

To prevent customer confusion, explicitly note that data other than
git repositories can still use NFS.

Update instructions for TLS with certbot

See merge request gitlab-org/gitlab!27745

- There is a missing `sudo` for changing permissions on the executable.
- On a system that doesn't have python3 installed the command fails
  because of the virtual environment setup.

Add recommended steps to Jenkins Migration docs

Closes #220790

See merge request gitlab-org/gitlab!34515

Add a new action to load dynamic options from the Prometheus endpoint
provided by the backend.

New options are loaded and replaced in the variables, allowing the user
to select them.

Fix broken CSS for system notes

See merge request gitlab-org/gitlab!34870

Resolve "Improve performance of user avatar loading"

Closes #220251

See merge request gitlab-org/gitlab!35188

Merge branch '223788-improve-query-to-retrieve-job-artifacts-with-files-stored-locally' into 'master'

Improve query to retrieve job artifacts with files stored locally

Closes #223788

See merge request gitlab-org/gitlab!35084

Revert "Merge branch 'extend-dashboard-fixture' into 'master'" RUN AS-IF-FOSS

Closes #223996

See merge request gitlab-org/gitlab!35186

[ci skip]

[ci skip]

Group pipelines list components

See merge request gitlab-org/gitlab!34962

Reorder specs to match actions implementation

See merge request gitlab-org/gitlab!34908

Changed GMA to Closed Beta

See merge request gitlab-org/gitlab!34877

Remove unnecessary cop disable comments

See merge request gitlab-org/gitlab!35148

Docs: move getting_started_part_four.md to new home

See merge request gitlab-org/gitlab!35179

Add to a subdirectory, and give it a more helpful name.

This reverts merge request !33301