Use correct pattern for stake deregistration certs in Conway

[carbolymer]

Changelog

- description: |
    Use correct stake deregistration certs in Conway
    Require 400,000 deposit when registering keys in `defaultShelleyGenesis`.
# 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
  # - refactoring    # QoL changes
   - 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

This ledger change:

• IntersectMBO/cardano-ledger@7539293#diff-be291f5db9f340104872a79db3fe1f8da0a181c9c998176e49abde0108f6f1c5L149

Has triggered this defect:

• build command doesn't balance tx output when key deposit is returned cardano-cli#942

Because we were using a pattern meant for older eras, for deregistration certificates in Conway.

How to trust this PR

Highlight important bits of the PR that will make the review faster. If there are commands the reviewer can run to observe the new behavior, describe them.

Checklist

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

[Jimbo4350]

This is the correct fix. The fix definitely did not belong in cardano-cli.