Bump dependencies (Chang#2 HF Compat)

[errfrom]

1. Bump cardano-node to v10.1.4, Fix cardano-testnet
2. Bump Ogmios to v6.8.0

Pre-review checklist

• All code has been formatted using our config (make format)
• Any new API features or modification of existing behavior are covered with tests
• The template (templates/ctl-scaffold) has been updated
• The changelog has been updated under the ## Unreleased header, using the appropriate sub-headings (### Added, ### Changed, ### Removed, ### Fixed), and the links to the appropriate issues/PRs have been included