Remove beacon from certificate

[Alenar]

Content

This PR remove the beacon field from the CertificateMessage and CertificateListMessage as this field was supersede by the signed_entity_type field, field that is mandatory since distribution 2418.1.

This allow to remove the immutable_file_number plus the conversion to cardano db beacon on the CertificateMetadata entity and the CertificateRecord, those only existed to recover the beacon when building a message.

[!WARNING]

Nodes from distribution below 2430 are not compatible with this change.

Pre-submit checklist

• Branch
  • [ ] Tests are provided (if possible)
  • [x] Crates versions are updated (if relevant)
  • [x] CHANGELOG file is updated (if relevant)
  • [x] Commit sequence broadly makes sense
  • [x] Key commits have useful messages
• PR
  • [x] No clippy warnings in the CI
  • [x] Self-reviewed the diff
  • [x] Useful pull request description
  • [x] Reviewer requested

Comments

This changes should not induce a recompute of the certificates hashes as the immutable file number was not used in the certificate hash computation (the epoch and the network are still used).

Issue(s)

Closes #1958

[github-actions[bot]]

Test Results

    4 files  ±0     51 suites  ±0   10m 41s ⏱️ +15s 1 398 tests  - 2  1 398 ✅  - 2  0 💤 ±0  0 ❌ ±0  1 609 runs   - 2  1 609 ✅  - 2  0 💤 ±0  0 ❌ ±0 

Results for commit 22dc14fd. ± Comparison against base commit 650e77d0.

This pull request removes 4 and adds 2 tests. Note that renamed tests count towards both.

``` mithril-common ‑ messages::certificate::tests::test_actual_json_deserialized_into_previous_message mithril-common ‑ messages::certificate::tests::test_json_next_version_deserialized_into_actual_message mithril-common ‑ messages::certificate_list::tests::test_actual_json_deserialized_into_previous_message mithril-common ‑ messages::certificate_list::tests::test_json_next_version_deserialized_into_actual_message ``` ``` mithril-common ‑ messages::certificate::tests::test_actual_json_deserialized_into_message_supported_until_open_api_0_1_32 mithril-common ‑ messages::certificate_list::tests::test_actual_json_deserialized_into_message_supported_until_open_api_0_1_32 ```

:recycle: This comment has been updated with latest results.