- Use GHC 9.6.6 for bootstrapping

- HLS v2.7.0.0 does not build with GHC v9.6.6

- Close https://github.com/benz0li/ghc-musl/issues/8
- Update base image to alpine:3.20
  - Add package clang18
- Patch to force LLVM v18 backend
- Update cabal-install to v3.12.0.0-prerelease
  - i.e. cabal-install 3.11.0.0
- Dev Container
  - Remove 'GHC 9.2 (recommended)'
  - Remove 'GHC 9.4'
  - Promote 'GHC 9.6' to recommended
  - Add 'GHC 9.10 (latest)'

- Update base image to alpine:3.20
- Patch to force LLVM v16 backend

- Update base image to alpine:3.20
- Patch to force LLVM v16 backend

- Use GHC 9.6.5 for bootstrapping