Second patch release to address some small errors discovered in the pipeline template.
Apologies for the inconvenience.

• Fix syntax error in /push_dockerhub.yml GitHub Action workflow
• Change params.readPaths -> params.input_paths in test_full.config
• Check results when posting the lint results as a GitHub comment
  • This feature is unfortunately not possible when making PRs from forks outside of the nf-core organisation for now.
• More major refactoring of the automated pipeline sync
  • New GitHub Actions matrix parallelisation of sync jobs across pipelines [#673]
  • Removed the --all behaviour from nf-core sync as we no longer need it
  • Sync now uses a new list of pipelines on the website which does not include archived pipelines [#712]
  • When making a PR it checks if a PR already exists - if so it updates it [#710]
  • More tests and code refactoring for more stable code. Hopefully fixes 404 error [#711]