Error with latest polkadot-sdk/master (two incompatible versions of rocksdb are pulled in) #118

$ cargo tree -i rocksdb
    Updating crates.io index
error: failed to select a version for `librocksdb-sys`.
    ... required by package `rocksdb v0.21.0`
    ... which satisfies dependency `rocksdb = "^0.21"` of package `kvdb-rocksdb v0.19.0`
    ... which satisfies dependency `kvdb-rocksdb = "^0.19.0"` of package `sc-client-db v0.39.0`
    ... which satisfies dependency `sc-client-db = "^0.39.0"` of package `sc-cli v0.40.0`
    ... which satisfies dependency `sc-cli = "^0.40.0"` of package `try-runtime-cli v0.42.0`
    ... which satisfies dependency `try-runtime-cli = "^0.42.0"` of package `staging-node-cli v3.0.0-dev (/Users/michi/projects/polkadot-sdk/substrate/bin/node/cli)`
    ... which satisfies path dependency `node-cli` (locked to 3.0.0-dev) of package `polkadot-sdk-docs v0.0.1 (/Users/michi/projects/polkadot-sdk/docs/sdk)`
versions that meet the requirements `^0.11.0` are: 0.11.0+8.1.1

package `librocksdb-sys` links to the native library `rocksdb`, but it conflicts with a previous package which links to `rocksdb` as well:
package `librocksdb-sys v0.17.3+10.4.2`
    ... which satisfies dependency `librocksdb-sys = "^0.17.3"` of package `rocksdb v0.24.0`
    ... which satisfies dependency `rocksdb = "^0.24.0"` of package `kvdb-rocksdb v0.20.0`
    ... which satisfies dependency `kvdb-rocksdb = "^0.20.0"` of package `node-bench v0.9.0-dev (/Users/michi/projects/polkadot-sdk/substrate/bin/node/bench)`
Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "rocksdb"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.

failed to select a version for `librocksdb-sys` which could resolve this conflict