Cardano Updates

- Changed expected error code from 5040 to 5000 in multiple DRep delegation JSON test files to reflect updated error handling.
- Added new integration test cases for DRep vote delegation, covering scenarios with matching and mismatching types, as well as handling of CIP-129 prefixes.
- Revised existing test cases to ensure correct DRep id handling and error messages.
- Updated DRep delegation guide to clarify the requirement of the `type` field for both key_hash and script_hash formats.

- Changed expected error code from 5040 to 5000 in multiple DRep delegation JSON test files to reflect updated error handling.
- Added new integration test cases for DRep vote delegation, covering scenarios with matching and mismatching types, as well as handling of CIP-129 prefixes.
- Revised existing test cases to ensure correct DRep id handling and error messages.
- Updated DRep delegation guide to clarify the requirement of the `type` field for both key_hash and script_hash formats.

Documentation update addressing critical issues and adding new feature
documentation for cardano-rosetta-java v1.3.2.

### Changes Made

**Removed deprecated features:**
- Deleted Catalyst voting documentation (feature removed in v1.3.0)
- Cleaned up all references in user guides and core concepts

**Fixed native assets documentation:**
- Corrected sign convention: negative values for inputs, positive for
outputs
- Replaced HEX symbols with ASCII representations in examples
- Added comprehensive minting/burning observations note
- Updated API spec with Cardano-specific terminology

**Added CIP-129 support documentation:**
- Updated DRep delegation guide for 29-byte hash support
- Clarified that `type` field remains required for all formats
- Enhanced API spec with DRep parameter descriptions

**Added performance metrics:**
- Created v1.3.2 performance test results and integrated with existing
documentation

**Fixed Docker volume path:**
- Corrected PostgreSQL volume from `/node/postgres` to
`/var/lib/postgresql/data`

* feat: add integration testing for Rosetta API construction endpoints

- Introduced a new Python validator for testing Rosetta construction API endpoints, supporting snapshot testing and OpenAPI schema validation.
- Updated GitHub Actions workflow to set up Python 3.12 and install necessary dependencies.
- Added README documentation for usage instructions and features of the new validator.

* fix: integration tests with network flexibility

- Added support for specifying network IDs in integration tests via the `--network-id` parameter, allowing for dynamic replacement of `{{networkId}}` placeholders.
- Updated README to document new network flexibility features and usage examples.
- Modified the integration test script to handle network ID replacements in API calls, defaulting to 'preprod' if not specified.
- Improved CI/CD integration by ensuring proper exit codes based on test results.

* refactor: update network identifier in integration test JSON files

- Replaced hardcoded 'preprod' network identifier with a dynamic placeholder '{{networkId}}' in multiple integration test JSON files for improved flexibility.
- Ensures consistency across test cases and aligns with recent changes to support dynamic network configurations.

* refactor: expand VOLATILE_FIELDS in integration tests

- Added 'options.transaction_size' to the VOLATILE_FIELDS dictionary in the construction API integration test to ensure proper handling of devkit differences