Cardano Updates

Update delegation_vote description for drep

Fixes 13.7.0.0 and prepares for 13.7.0.1

Continues https://github.com/IntersectMBO/cardano-db-sync/pull/2005,
adds migration and warning

Fixes a bug where UNNEST lists had the wrong order causing crashes

In GitHub workflows where we use cachix/install-nix-action, we are
getting the following failure:

    This version of Nixpkgs requires an implementation of Nix with the
    following features:
      - `builtins.nixVersion` reports at least 2.18

This is because we previously fixed the version to 2.17, due to previous
incompatibilities. Those have now been resolved by
cachix/install-nix-action, so we don't need to fix the version anymore.

Continues https://github.com/IntersectMBO/cardano-db-sync/pull/2005,
adds migration and warning

Fixes a bug where UNNEST lists had the wrong order causing crashes

* update nix flake

* Disable split static postgresql outputs

In it's current state, we're unable to build cardana-chain-gen:

    cannot find -lpgcommon: No such file or directory
    cannot find -lpgport: No such file or directory
    collect2: error: ld returned 1 exit status

Remove the extra configure flags, and see if we can still build all the
other artifacts.

* 1995 fix offchain vote data

* add another scenario for offchain vote data

* change file location

* add more generic jsonld CIP-100 test files

---------

Co-authored-by: Cmdv <[email protected]>
Co-authored-by: Sean D Gillespie <[email protected]>

docker: Update cardano-node image version

In GitHub workflows where we use cachix/install-nix-action, we are
getting the following failure:

    This version of Nixpkgs requires an implementation of Nix with the
    following features:
      - `builtins.nixVersion` reports at least 2.18

This is because we previously fixed the version to 2.17, due to previous
incompatibilities. Those have now been resolved by
cachix/install-nix-action, so we don't need to fix the version anymore.