Update pyproject.toml

[tztsai]

Update the version dependency of pre-commit.

Fixes #150.

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

Key checklist

• [x] Make sure you've run the pre-commit checks: $ pre-commit run -a
• [x] All tests pass: $ poetry run pytest

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (06cbeac) 94.09% compared to head (b1933bc) 94.09%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #154 +/- ## ======================================== Coverage 94.09% 94.09% ======================================== Files 21 21 Lines 1134 1134 ======================================== Hits 1067 1067 Misses 67 67 ```

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