optimize CI

[atravitz]

• conda_cron.yaml : create environment all in one step, run at 5 UTC. eventually run long tests here? (fix conda cron CI build #1432)
• package-test.yaml: turn this intomain_cron.yaml, run long tests here every night at 5 UTC - make our working dir such that we'll catch MANIFEST.in issues. (updating daily CI runners #1435)
• docker_cron.yaml: make sure this builds a docker image from main and not the latest conda forge. clean up any unnecessary tasks. (fine as-is, I don't believe any work is needed)
• mypy.yaml: is this too permissive? check defaults and enforce ignore_missing_imports (CI: update mypy ci #1433)
• installer.yaml: review this and update micromamba version etc. (clean up single file installer ci #1434)
• gpu-runner.yaml and cpu-runner.yaml: rename these to gpu-integration-tests.yaml and cpu-long-test.yaml
• clean_cache.yaml: nothing needed here
• change.yaml: rename to api_break_check.yaml

for all:

• unpin micromamba (resolved by pin micromamba version to latest #1348)

[atravitz]

@mikemhenry maybe we can also use if: github.event.pull_request.draft == false to avoid running expensive tests on draft PRs.

[atravitz]

re: mypy defaults, I believe this is the list of defaults used: https://mypy.readthedocs.io/en/stable/error_code_list.html

[atravitz]

re: docker-cron - I think this is saying that it's running on main (as opposed to the latest conda forge) https://github.com/OpenFreeEnergy/openfe/actions/runs/15096818271

the fact that it failed a few times also makes me thing it's running not on the latest conda forge release 😁

[atravitz]

closing since all items are addressed, and any issues have been opened for new items.