Add gitleaks and update .pre-commit-config.yaml

[danielfromearth]

GitHub Issue: #80 , #246

Description

• Add gitleaks to the pre-commit hooks.
• Update pre-commit hooks and autoupdate config

PR Acceptance Checklist

• Unit tests added/updated and passing.
• [n/a] Integration testing
• CHANGELOG.md updated
• Documentation updated (if needed).

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📚 Documentation preview 📚: https://stitchee--247.org.readthedocs.build/en/247/

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.11%. Comparing base (9be3f0c) to head (a0ff697).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #247   +/-   ##
========================================
  Coverage    86.11%   86.11%           
========================================
  Files           11       11           
  Lines          648      648           
========================================
  Hits           558      558           
  Misses          90       90           

Flag	Coverage Δ
integration	44.90% <50.00%> (ø)
unittests	83.64% <100.00%> (ø)

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[danielfromearth]

pre-commit.ci autofix

[danielfromearth]

pre-commit.ci autofix