fairway v1.26 (bundled with common-ci-tasks v4.12) replaced the
`:{% .AppVersion %}` placeholder on spec.image with a regex that
rejects any tag or scheme; the app version now comes from
Chart.AppVersion at Helm-templating time. Old fairway required the
placeholder, so the manifest change and the common-ci-tasks floor
must land together.

Existing release-platform projects are migrated by two new,
idempotent, release_platform-gated migrations:

- strip-fairway-appversion-tag.py removes the placeholder from
  .runway/fairway.yaml. It runs after the rename migration, whose mv
  drops the project's old (tagged) manifest over the freshly rendered
  tagless one; without it the tag would persist permanently, since
  the template no longer changes that line for a 3-way merge.

- enforce-common-ci-tasks-min-version.py raises every common-ci-tasks
  component in .gitlab-ci.yml to >= v4.12, otherwise unreachable
  because .gitlab-ci.yml is in _skip_if_exists.

Both are pinned to fire once for projects rendered at <= v1.52.2.

Ref: gitlab-org/software-delivery/release-platform-canary!148

AI-assisted: Zed Agent (Claude Opus 4.8)

chore(deps): update common-ci-tasks to v4.14

See merge request !734

chore(deps): update dependency gitlab-org/caproni to v2.49.0

See merge request !735

fix: drop image tag from fairway manifest

See merge request !733