Fix Poetry groups and update version.

[jamesturner246]

This change brings the groups in pyproject.toml up to date and lets the user install only what they need with e.g. poetry install --with dev, poetry install --with docs, instead of just installing all optional dependency groups with poetry install.

I've updated the CI hooks, and taken the liberty to bump the poetry version used by CI. I did another poetry lock --no-update to remove the old category fields.

[codecov]

Codecov Report

Merging #69 (df26735) into develop (3db57a7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #69   +/-   ##
========================================
  Coverage    93.58%   93.58%           
========================================
  Files            3        3           
  Lines          156      156           
========================================
  Hits           146      146           
  Misses          10       10           

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[dalonsoa]

LGTM!

[dalonsoa]

@all-contributors please add @jamesturner246 for infra

[allcontributors]

@dalonsoa

I've put up a pull request to add @jamesturner246! 🎉