update atlas api import with new name

[alessandrofelder]

Description

What is this PR

• Bug fix
• Addition of a new feature
• Other

Why is this PR needed?
Workflows still had a remaining import for the atlas API using its old name.

What does this PR do?
Updates the import call from bg_atlasapi to brainglobe_atlasapi

References

Closes #85

How has this PR been tested?

CI should pass, but didn't before in #85

Is this a breaking change?

No

Does this PR require an update to the documentation?

No

Checklist:

• The code has been tested locally - hoping to get away with just CI (here and on cellfinder) for this one-line change.
• [n/a] Tests have been added to cover all new functionality (unit & integration)
• [n/a] The documentation has been updated to reflect any changes
• [n/a] The code has been formatted with pre-commit

[alessandrofelder]

Probably worth re-running jobs on https://github.com/brainglobe/cellfinder/actions/runs/8423214341 before merging this, just to double-check.

[willGraham01]

Probably worth re-running jobs on https://github.com/brainglobe/cellfinder/actions/runs/8423214341 before merging this, just to double-check.

The action will only checkout the HEAD of main in this repo, so the workflow will continue to fail until this PR gets merged. But the action is (theoretically) just running the test suite here, so everything should be OK.

Will leave the merge decision up to you.

[alessandrofelder]

(Just confirming brainmapper tests on cellfinder repo pass now this fix is in main ✅ )