Use the To header when sending pipeline emails

See merge request gitlab-org/gitlab!73363

A missing To header can cause issues with spam filters. And since we no
longer render job logs in these emails, generating these emails
individually isn't expensive anymore.

Changelog: fixed

Merge branch '341185-importing-group-as-a-top-level-group-targeting-an-existing-namespace-give-false-positive' into 'master'

Resolve "Importing group as a top level group targeting an existing namespace give false positive status"

See merge request gitlab-org/gitlab!71834

Resolve "Importing group as a top level group targeting an existing namespace give false positive status"

ci: Fetch target branch in 'db:check-migrations'

See merge request gitlab-org/gitlab!73256

Fix permission check for confidential quick action

See merge request gitlab-org/gitlab!73515

Add jh only feature flag

See merge request gitlab-org/gitlab!73424

Allow SSO callbacks through maintenance mode

See merge request gitlab-org/gitlab!73550

Add case for insights page handler for url mask

See merge request gitlab-org/gitlab!72864

For group and project insight 
controllers pseudonymization helper raise
errors, due to unrecognized path. This is 
caused by the way how Rails handle internally
constraints. This commit add special 
handling for those cases

Increase file import size validator timeout

See merge request gitlab-org/gitlab!73400

Add Start iteration button to manual cadences

See merge request gitlab-org/gitlab!66065

Handle `Errno::ENETUNREACH` in `Gitlab::HTTP`

See merge request gitlab-org/gitlab!73507

Allow bootsnap to be disabled

See merge request gitlab-org/gitlab!73331

Defaults reviewer state to attention_required

See merge request gitlab-org/gitlab!73295

Ensuring all gitaly nodes are running prior to e2e

See merge request gitlab-org/gitlab!73592

Do not assert creation of hook directories

See merge request gitlab-org/gitlab!73263

Allow relative WebP image embed in markdown

See merge request gitlab-org/gitlab!73426

Move all CI models to CI database connection if CI db configured

See merge request gitlab-org/gitlab!73243

Fixed a typo within the repository storage section

See merge request gitlab-org/gitlab!73546

Update gitlab-dangerfiles to 2.4.0

See merge request gitlab-org/gitlab!73535

Remove pipeline association from Vulnerabilities::Finding

See merge request gitlab-org/gitlab!73115

Add note about using postgres.ai to create data

See merge request gitlab-org/gitlab!73393

Update Security MR approvasl documentation

See merge request gitlab-org/gitlab!73328

Add info on enabling package registry to npm doc

See merge request gitlab-org/gitlab!73164

Merge branch '327281-stop-the-increase-of-unlocked-expired-artifacts-waiting-for-removal-2' into 'master'

Use new locked column on ci_job_artifacts in DestroyAllExpiredService

See merge request gitlab-org/gitlab!72406

Added Environments page to Deploy and release area

See merge request gitlab-org/gitlab!73573

Add spacing at top of project/group blank new forms

See merge request gitlab-org/gitlab!73205

Fix bug with AuditEvent target_id

See merge request gitlab-org/gitlab!70541

Updated to match the latest left nav

See merge request gitlab-org/gitlab!73562

- refines UI a bit

Changelog: other