convert-excel-to-json
                                
                                
                                
                                    convert-excel-to-json copied to clipboard
                            
                            
                            
                        update all deps to latest stable versions
The dependencies of this library are quite old and have a few reported vulnerabilities.
This PR updates them all to latest stable versions.
I chose not to update "argparse" to 2.x because it would require a change to the usage of the library.
All tests pass when run in the CLI
@DiegoZoracKy any way you could merge this in?