Bump StatsBase version to 0.33

[xinkai-zhou]

Somehow after updating the JuliaDB package, I will get that StatsBase is restricted to 0.24.0-0.32.2.

ERROR: Unsatisfiable requirements detected for package StatsBase [2913bbd2]: StatsBase [2913bbd2] log: ├─possible versions are: 0.24.0-0.33.10 or uninstalled ├─restricted to versions * by an explicit requirement, leaving only versions 0.24.0-0.33.10 ├─restricted by compatibility requirements with WiSER [2ff19380] to versions: 0.33.0-0.33.10 │ └─WiSER [2ff19380] log: │ ├─possible versions are: 0.1.2 or uninstalled │ └─restricted to versions * by an explicit requirement, leaving only versions 0.1.2 └─restricted by compatibility requirements with JuliaDB [a93385a2] to versions: 0.24.0-0.32.2 — no versions left └─JuliaDB [a93385a2] log: ├─possible versions are: 0.9.0-0.13.1 or uninstalled └─restricted to versions * by an explicit requirement, leaving only versions 0.9.0-0.13.1

[hdavid16]

Please release a version of JuliaDB with the updated compat!