Release 8.18.0.0

[smelc]

Changelog

- description: |
    Release 8.18.0.0, featuring cardano-api 8.37.0.0
# 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...

Context

We want IntersectMBO/cardano-api#400 available in cardano-node, i.e cardano-api 8.37.0.0, so that adding new Conway tests in cardano-node is easier.

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• NA New tests are added if needed and existing tests are updated. See Running tests for more details
• Self-reviewed the diff

[smelc]

I'll merge in my morning tomorrow when I can shortly do the CHaP version afterwards.

[smelc]

CHaP PR: IntersectMBO/cardano-haskell-packages#634