Revert RocksDB 9.0.0 update

there seems to be a regression, likely from https://github.com/facebook/rocksdb/issues/12361 / https://github.com/facebook/rocksdb/pull/12309



```
[1/0/2 built] building rocksdb-9.0.0 (configurePhase): -- Detecting CXX compile features - donedirenv: ([/Users/strawberry/.nix-profile/bin/direnv export zsh]) is taking a while to execute. Use CTRL-C to give up.
error: builder for '/nix/store/9slwgpnardhn2vqzqhn361ic668n38wq-rocksdb-9.0.0.drv' failed with exit code 1;
       last 10 log lines:
       > -- Found lz4: /nix/store/cafwv4439qbm2ij04mpc7xz5m3f7mfix-lz4-1.9.4/lib/liblz4.dylib
       > CMake Error at /nix/store/bin32lqag7lx38994xpf9jvhk1xbd64c-cmake-3.28.2/share/cmake-3.28/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
       >   Could NOT find zstd (missing: ZSTD_INCLUDE_DIRS)
       > Call Stack (most recent call first):
       >   /nix/store/bin32lqag7lx38994xpf9jvhk1xbd64c-cmake-3.28.2/share/cmake-3.28/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
       >   cmake/modules/Findzstd.cmake:17 (find_package_handle_standard_args)
       >   CMakeLists.txt:167 (find_package)
       >
       >
       > -- Configuring incomplete, errors occurred!
       For full logs, run 'nix log /nix/store/9slwgpnardhn2vqzqhn361ic668n38wq-rocksdb-9.0.0.drv'.
error: 1 dependencies of derivation '/nix/store/ir8jf2wic98iymjlk7d2i1kjjsgv15v2-nix-shell-env.drv' failed to build
```

happens in both rust-rocksdb and our fork of rust-rocksdb

Signed-off-by: strawberry <strawberry@puppygock.gay>