Update locks on synclist tasks

[awcrosby]

Description 🛠

Use shared_resources on calling parent task curate_all_synclist_repository
and calling child task curate_synclist_repository_batch. This prevents
golden_repo from being written to by another task.

Issue: AAH-1395

Reviewer Checklists 👀

Developer reviewer:

• Code looks sound, good architectural decisions, no code smells
• There is a Jira issue associated (note that "No-Issue" should be rarely used)
• Tests are included in galaxy_ng/tests/integration or galaxy_ng/tests/functional, and they fully cover necessary test scenarios… or tests not needed

QE reviewer (exceptions):

• Tests are included in galaxy_ng/tests/integration or galaxy_ng/tests/functional, and they fully cover necessary test scenarios… or tests not needed
• PR meets applicable Acceptance Criteria for associated Jira issue

Note: when merging, include the Jira issue link in the squashed commit

[mdellweg]

This looks good to me.
Assuming all the curate synclist tasks do is read from the golden repo.