Omit trailing slash when checking allowed requests in the read-only middleware [RUN ALL RSPEC]

See merge request gitlab-org/gitlab!61641

Use ConnectionHandler class to establish connection

This is for forward compat with Rails 6.1: 
`ActiveRecord::ConnectionAdapters::ConnectionSpecification::Resolver` 
no longer exists in Rails 6.1

Related issue: 
https://gitlab.com/gitlab-org/gitlab/-/issues/329572

See merge request gitlab-org/gitlab!61323

Fix warnings in custom generator for metrics definition

See merge request gitlab-org/gitlab!60458

Document new DAST API analyzer

See merge request gitlab-org/gitlab!59044

Customize settings for Advanced Search reindex operations

See merge request gitlab-org/gitlab!60730

Add username & password fields for Advanced Search

See merge request gitlab-org/gitlab!60710

Fix sort params in issues page refactor

See merge request gitlab-org/gitlab!61369

In https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61638, we
restored the behavior and omitted the trailing slash when proxying
pre-authorized routes with no suffix.

These changes add an extra layer of safety and omit the trailing
slash on the read-only middleware.

Changelog: fixed

Update Threat monitoring alert docs for the updated alert table

See merge request gitlab-org/gitlab!61622

Part 2 - Artifact download migration to graphql

See merge request gitlab-org/gitlab!61169

Add keep_alive_slots component

See merge request gitlab-org/gitlab!61637

Use utility classes in job app

See merge request gitlab-org/gitlab!61532

Add missing step in upgrade path for 13.2 example docs

See merge request gitlab-org/gitlab!61486

Replaced node with site to align with our defined terms on setup page

See merge request gitlab-org/gitlab!53483

Improve the incremental rollout part in the feature flag rollout template

See merge request gitlab-org/gitlab!61586

Enable notification_setting_recipient_refactor by default [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!61443

State that fuzz stage must be added

See merge request gitlab-org/gitlab!58792

Update feature proposal template names

See merge request gitlab-org/gitlab!59317

Moved bulk edit to different page

See merge request gitlab-org/gitlab!61623

Add a new badge for billable membership types

See merge request gitlab-org/gitlab!61366

Geo 2.0 Regression - Data Types

See merge request gitlab-org/gitlab!61409

combined_menu flag feature specs [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!60335

Use "select" in topic template

See merge request gitlab-org/gitlab!61608

Jobs to be done experiment in first mile -- asking for objective [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!60038