Add support for mev-boost on Holesky

[khalifaa55]

Closes #378

Changes:

• Add support for mev-boost on Holesky

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe):

Testing

Requires testing

• Yes
• No

In case you checked yes, did you write tests?

• Yes
• No

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.05%. Comparing base (011fad2) to head (694550b).
⚠️ Report is 90 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #380   +/-   ##
========================================
  Coverage    76.05%   76.05%           
========================================
  Files           80       80           
  Lines         4589     4589           
========================================
  Hits          3490     3490           
  Misses        1008     1008           
  Partials        91       91           

Flag	Coverage Δ
unittests	76.05% <ø> (ø)

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