Merge branch '14634-broken-master-ee-spec-services-slash_commands-global_slack_handler_spec-rb-ce' into 'master'

Resolve "Broken master: ee/spec/services/slash_commands/global_slack_handler_spec.rb"

Closes #14634

See merge request gitlab-org/gitlab-ce!32518

Fix typo in GitLab CI configuration reference

See merge request gitlab-org/gitlab-ce!32382

Changed Geo general update steps

Closes gitlab-ee#12773

See merge request gitlab-org/gitlab-ce!32212

Add argument to catch

See merge request gitlab-org/gitlab-ce!32484

Adds basic overcommit support

See merge request gitlab-org/gitlab-ce!31840

- Pass in a nil project to Gitlab::SlashCommands::ApplicationHelp.new
if the chatops command is help.
- Modify the Gitlab::SlashCommands::Presenters::Help message to skip
printing out project information.

Add additional public note to project container registry setting

See merge request gitlab-org/gitlab-ce!32447

Update elasticsearch indexer installation instructions

Closes gitlab-ee#11670

See merge request gitlab-org/gitlab-ce!32274

Added cross reference to the troubleshooting guide

See merge request gitlab-org/gitlab-ce!32346

Realign 3 docs that diverged between ce/ee

See merge request gitlab-org/gitlab-ce!32513

Adjust table entries in quick actions doc

Closes #66256

See merge request gitlab-org/gitlab-ce!32038

Also fix links to renamed headers and moved content

Crop, trim and  compress animated gifs

See merge request gitlab-org/gitlab-ce!32511

Convert 'code quality' GIF to PNG

See merge request gitlab-org/gitlab-ce!32510

Image converted to reduce file size.

Update GitLab Workhorse to v8.10.0

See merge request gitlab-org/gitlab-ce!32501

Replaced image with smaller version

See merge request gitlab-org/gitlab-ce!32509

The size of this image was reduced to:

1. Reduce its storage size.
2. Optimze for faster loading in browser.

Update gitlab-shell to v9.4.2

See merge request gitlab-org/gitlab-ce!32505

Fix 500 error in CI lint when included templates are an array

Closes #66605

See merge request gitlab-org/gitlab-ce!32232

Documentation: Describe where to set "Size limit per repository" for projects and groups

See merge request gitlab-org/gitlab-ce!31856

Change markdownlint wildcard format

See merge request gitlab-org/gitlab-ce!32379

Improve document format, putting parameters in a table

See merge request gitlab-org/gitlab-ce!31905

Improve RAW reading, consistency in api uri

See merge request gitlab-org/gitlab-ce!31941

Move generic k8s services out of GCP namespace

See merge request gitlab-org/gitlab-ce!32310

Remove :kubernetes_namespace_per_environment feature flag

See merge request gitlab-org/gitlab-ce!32140

Avoid calling freeze on already frozen strings in app/models

See merge request gitlab-org/gitlab-ce!32499

Avoid calling freeze on already frozen strings in app/controllers

See merge request gitlab-org/gitlab-ce!32498

Improve chatops help output

See merge request gitlab-org/gitlab-ce!32208