fix constants file, bump pre-commit isort

[thomasarmstrong98]

Pull Request

Description

After recent PR, file ocf_datapipes/utils/consts.py wasn't working due to small bug where dataarray creation took the superset of all variables instead of only those passed through as keys in the dictionary. Fixed this and tested working.

Also, bumping the pre-commit isort version to 5.12.0, as there are errors on the current version (see new thread https://stackoverflow.com/questions/75269700/pre-commit-fails-to-install-isort-5-11-4-with-error-runtimeerror-the-poetry-co). Upgrading the isort pre-commit config fixed this issue.

Fixes #

How Has This Been Tested?

Debugged change in ocf_datapipes/utils/consts.py

• [X] Yes

Checklist:

• [X] My code follows OCF's coding style guidelines
• [X] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [X] I have checked my code and corrected any misspellings

[peterdudfield]

First error starting happening here- https://github.com/openclimatefix/ocf_datapipes/actions/runs/4173316355/jobs/7225498026