refactor(test): use minimal config objects (#22769)

lib/util/git/semantic.spec.ts

lib/workers/repository/configured.spec.ts

lib/workers/repository/error-config.spec.ts

lib/workers/repository/error.spec.ts

lib/workers/repository/errors-warnings.spec.ts

lib/workers/repository/extract/manager-files.spec.ts

lib/workers/repository/finalize/prune.spec.ts

...workers/repository/finalize/repository-statistics.spec.ts

lib/workers/repository/init/cache.spec.ts

lib/workers/repository/onboarding/branch/config.spec.ts

lib/workers/repository/onboarding/pr/base-branch.spec.ts

...rkers/repository/onboarding/pr/config-description.spec.ts

lib/workers/repository/onboarding/pr/pr-list.spec.ts

lib/workers/repository/process/limits.spec.ts

lib/workers/repository/process/lookup/filter-checks.spec.ts

lib/workers/repository/result.spec.ts

lib/workers/repository/update/branch/automerge.spec.ts

...workers/repository/update/branch/lock-files/index.spec.ts

lib/workers/repository/update/branch/status-checks.spec.ts