Release cardano-ledger-byron

[teodanciu]

From https://github.com/input-output-hk/cardano-ledger at 3b8090905773bc8990755576d9fa7a5edf07e80d

[Lucsanszky]

Actually, we can add a revision instead of making a PR in ledger with the Cabal >=3.12 constraint. That way, we can use the same commit hash for the release as in #916 (0ba8e73c41847142e0bed09e09a8aa166fc10384).

[Lucsanszky]

@neilmayhew indicated that the Cabal >=3.12 constraint 'hack' might be problematic due to the fact that GHC 8.10.7 is bundled with Cabal 3.2.1.0. Are we okay to add this revision anyway, until haskell.nix is updated in a non-breaking way? Actually, let me try something so we don't have to add Cabal >=3.12.

cc @disassembler

[neilmayhew]

the Cabal >=3.12 constraint 'hack' might be problematic due to the fact that GHC 8.10.7 is bundled with Cabal 3.2.1.0

I was wrong about that (which is just as well, otherwise the revision wouldn't have worked either). The constraint is OK because nix/builder.nix adds --allow-boot-library-installs to the Cabal project's configureArgs.