Revert "Revert "python3Packages.bokeh: 2.2.3 -> 2.3.0""
Revert "Revert "python3Packages.bokeh: 2.2.3 -> 2.3.0""

Bokeh is now used with a supposedly compatible version of panel.
This reverts commit 3660d282acaf1e00aecdb38fa9a4d848f599b8ba.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs