ci: check runtime migrations (#14618)

* poc: check polkadot runtime upgrade

* typo

* try nested extends

* add checks for other networks

* .test-refs-no-trigger-prs-only

* Update scripts/ci/gitlab/pipeline/build.yml

Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>

* Update scripts/ci/gitlab/pipeline/build.yml

Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>

* Update scripts/ci/gitlab/pipeline/build.yml

Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>

* Update scripts/ci/gitlab/pipeline/build.yml

Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>

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Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>