Documentation: Praefect: support of PgBouncer

Closes gitaly#2976

See merge request gitlab-org/gitlab!38339

As Praefect talks to PostgeSQL instance we should use PgBouncer
in front of database to reduce resource consumption.
All required changes already done https://gitlab.com/gitlab-org/gitaly/-/issues/2816
in Praefect and tested https://gitlab.com/gitlab-org/gitaly/-/issues/2975
on the weekly demo.
The change describes required options that should be set for the
PgBouncer instance and what values should be substituted so
Praefect instances could connect to PostgreSQL throw PgBouncer.

Closes: https://gitlab.com/gitlab-org/gitaly/-/issues/2976

Revert "Merge branch 218012-vulnerabilities-are-incorrectly-marked..."

See merge request gitlab-org/gitlab!38411

Docs: Update RA troubleshooting page with metadata

See merge request gitlab-org/gitlab!38506

Improve pagination Link header details

See merge request gitlab-org/gitlab!37883

Add vi editor as a vale/markdownlint option

See merge request gitlab-org/gitlab!38069

Added mention of on-demand DAST scan

See merge request gitlab-org/gitlab!38539

Move date time picker tests to dashboard header spec

See merge request gitlab-org/gitlab!38543

Truncate long vulnerability names on security report

See merge request gitlab-org/gitlab!38056

Add metadata to verify api docs

See merge request gitlab-org/gitlab!38146

Replace test with it in Jest specs

See merge request gitlab-org/gitlab!38515

Use Gitaly protobuf version as DiffStats cache key

Closes #233083

See merge request gitlab-org/gitlab!38414

Updates Ingress version to 1.40.2

See merge request gitlab-org/gitlab!35924

As the date time picked is located in the dashboard header, the specs
should match. This also simplifies some store mocking.

Add e2e test of distributed reads

See merge request gitlab-org/gitlab!37534

Improve pipeline_status_on_operation_dashboard_spec.rb flakiness

See merge request gitlab-org/gitlab!38007

Replace fa-edit + fa-lock icons with GitLab SVG pencil, lock icon

Closes #225896 and #225904

See merge request gitlab-org/gitlab!38456

Add telemetry for instance-level and template integrations

See merge request gitlab-org/gitlab!38459

Update dependency @gitlab/ui to v17.43.0

See merge request gitlab-org/gitlab!38519

[Feature flag] Rollout of `security_on_demand_scans_site_profiles_feature_flag`

See merge request gitlab-org/gitlab!38412

Created the security_on_demand_scans_site_profiles_feature_flag feature
flag for using exisint DAST site profiles when running On-demand Scans.

Fix grammar in Danger roulette timezone details

See merge request gitlab-org/gitlab!38479

Onboarding issues invite teammates - backend

See merge request gitlab-org/gitlab!38169

When passing emails from the frontend,
send invitations when creating a group

Add metrics dashboard template selector for the WebIDE

See merge request gitlab-org/gitlab!37625

Elaborate on authoritative sources in Docs Style Guide

Closes #229916

See merge request gitlab-org/gitlab!38233

Fix remediated badge on vulnerabilities list

See merge request gitlab-org/gitlab!38478

Gracefully truncate entity_path in audit_events

See merge request gitlab-org/gitlab!38155

Minor bug fixes for SastBuildActions

See merge request gitlab-org/gitlab!38419

Implement saving the DAST scanner profiles

See merge request gitlab-org/gitlab!38023

Add note about DAST on-demand scans

Closes #231397

See merge request gitlab-org/gitlab!38445