Testworld v0.2.12

This release includes some major new features requested by the community, and some more minor bug fixes.

New Features:

• Distinct signatures in "mainnet" builds vs. the testnet signatures we have been using up until now #7738
• New validate-transaction command for verifying test transactions signed via other tools (like the ledger app) #7698
• Retry logic for the archive-node #7707
• Asynchronous best-chain GraphQL endpoint #7717
• Terraform workspaces support #7710
• Prometheus metrics improvements #7685 #7677

Bug Fixes:

• coda advanced dump-staking-ledger now returns an error when the staking ledger is not available #7612