Support parsing metadata fields added in LLVM 22

[RyanGlScott]

This adds support for parsing the sourceLanguageVersion and dataSize fields, which were introduced in LLVM 22. As such, this fixes #339 and fixes #340, respectively.

This bumps the llvm-pretty submodule to bring in the corresponding changes from GaloisInc/llvm-pretty#189.

---

Marked as a draft pending GaloisInc/llvm-pretty#189 landing upstream.

[RyanGlScott]

The Nix CI jobs are failing because they are trying to build llvm-pretty-bc-parser using GHC 9.14 for some reason, as can be seen in this failing CI log:

character-ps> Using ghc version 9.14.1 found on system at:
character-ps> /nix/store/vw7wss1jkcqk616mkqbqcdggczf28fbp-ghc-9.14.1/bin/ghc
character-ps> Using ghc-pkg version 9.14.1 found on system at:
character-ps> /nix/store/vw7wss1jkcqk616mkqbqcdggczf28fbp-ghc-9.14.1/bin/ghc-pkg-9.14.1
...

       > Configuring indexed-traversable-0.1.4...
       > Error: [Cabal-8010]
       > Encountered missing or private dependencies:
       >     base >=4.12 && <4.22 (installed: 4.22.0.0),
       >     containers >=0.6.0.1 && <0.8 (installed: 0.8)
       > CallStack (from HasCallStack):
       >   dieWithException, called at libraries/Cabal/Cabal/src/Distribution/Simple/Configure.hs:1620:11 in Cabal-3.16.0.0-7f1b:Distribution.Simple.Configure
       >
       For full logs, run:
         nix log /nix/store/s289gz63zkx0zwc0f8qvv9gq7lkpxb69-indexed-traversable-0.1.4.drv

Any idea how to make Nix not do that?

[kquick]

By default, it uses the latest version of GHC available in the nixpkgs distribution. I pushed an update to the flake.nix to avoid use of GHC 9.14 for now. We can easily revert the change when GHC 9.14 changes are ready to go.

[RyanGlScott]

Thanks, Kevin!

It's unfortunate that some of the llvm-quick-fuzz CI jobs appear to be flaking out. Perhaps we should more seriously consider removing these jobs, now that they're superseded by the Nix CI jobs (#330).