Cardano signatures are not produced on testing-sanchonet and testing-mainnet

[jpraynaud]

Why

Cardano transactions are not produced consistently on the testing-sanchonet and testing-mainnet. The problem is not occurring on the testing-preview network which is running the same code as testing-sanchonet.

What

Investigate and fix the problem which prevent consistent signing.

How

• Investigate the problem on the signature process
  • testing-sanchonet: parse problem with some blocks
    • Activate GitHub environment variable AGGREGATOR_ALLOW_UNPARSABLE_BLOCK to true
    • File a bug on pallas repository
  • testing-mainnet:
    • timeout when importing some immutable files
• Fix the signature process
  • testing-sanchonet:
    • Apply patch
    • Rollback GitHub environment variable AGGREGATOR_ALLOW_UNPARSABLE_BLOCK to false
    • Reset Cardano transactions stores of aggregator and signers
  • testing-mainnet:
    • Apply patch for timeout

[jpraynaud]

I commented on the issue txpipe/pallas#410 (comment) with the problem that we have noticed with blocks parsing with pallas.