Update hedgehog-extras to 0.6.0.1

[smelc]

Changelog

- description: |
    Bump hedgehog-extras to 0.6.0.1 to benefit of this fix: https://github.com/input-output-hk/hedgehog-extras/pull/58
# uncomment types applicable to the change:
  type:
  # - feature        # introduces a new feature
  # - breaking       # the API has changed in a breaking way
  - compatible     # the API has changed but is non-breaking
  # - optimisation   # measurable performance improvements
  # - improvement    # QoL changes e.g. refactoring
  # - bugfix         # fixes a defect
  - test           # fixes/modifies tests
  # - maintenance    # not directly related to the code
  - release        # related to a new release preparation
  # - documentation  # change in code docs, haddocks...