Upgrade cardano-api to 8.30

[carbolymer]

Changelog

- description: |
    - Upgrade cardano-api to 8.30 
      https://github.com/input-output-hk/cardano-api/blob/main/cardano-api/CHANGELOG.md#83000
    - Remove usage of stake pool keys as credentials
      https://github.com/input-output-hk/cardano-cli/pull/412
# 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

Note

Note to reviewers: this PR should be reviewed on commit-by-commit basis. 4e97da7 was already reviewed and approved in: #412

This PR consists of two commits:

• 4e97da7 - contents of Remove usage of stake pool keys as credentials #412
• 8b16607 - upgrade of cardano-api to 8.30

This PR requires:

• New version cardano-api-8.30.0.0 cardano-api#351

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