Delta from 10.2.19 to 10.2.20

Table name Changes
alex_fx_rate Dropped constraint pk__ale336aa144
alex_fx_rate Added fx_source_ekey
alex_user Added fx_source_ekey
alex_pd_eur_rate Added until_date
alex_import_er_line_item Added imported_read_only
alex_import_pr_line_ite Added imported_read_only
alex_import_tp_line_ite Added imported_read_only
alex_import_ts_line_ite Added imported_read_only