pre-commit: add gitleaks to detect hardcoded secrets

[jbampton]

Description

This PR adds another check / hook / test to our pre-commit framework

Closes #10978

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• build/CI
• test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

Ran locally pre-commit run --all-files

How did you try to break this feature and the system with this change?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 16.57%. Comparing base (5b7c3b4) to head (0bc8f28).

Additional details and impacted files

@@            Coverage Diff            @@
##               main   #11064   +/-   ##
=========================================
  Coverage     16.57%   16.57%           
  Complexity    13967    13967           
=========================================
  Files          5743     5743           
  Lines        510468   510468           
  Branches      62073    62073           
=========================================
  Hits          84616    84616           
+ Misses       416390   416389    -1     
- Partials       9462     9463    +1     

Flag	Coverage Δ
uitests	3.90% <ø> (ø)
unittests	17.47% <ø> (ø)

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