firecow: 'parallel' property type must be integer at test-only changes.parallel

Migrated issue

Reported by: cmlara

Related to !245 (merged)

Problem/Motivation

• 'parallel' property type must be integer at test-only changes.parallel
Specification docs agrees this should be an integer between 1 and 200.
https://docs.gitlab.com/ee/ci/yaml/#parallel

Steps to reproduce

$ gitlab-ci-local --version
4.52.2

$gitlab-ci-local \
  --remote-variables git@git.drupal.org:project/gitlab_templates=includes/include.drupalci.variables.yml=main \
  --cleanup \
  --no-artifacts-to-source \
  --variable="_GITLAB_TEMPLATES_REPO=project/gitlab_templates" \
  "$@"

Proposed resolution

Set an integer for parallel value or remove if not needed.

Remaining tasks

User interface changes

None

API changes

None

Data model changes

None