Bump antlr4 version from 4.8 to 4.5.1, as it was in conflict with eu.clarin.sru.fcs/fcs-ql
Bump antlr4 version from 4.8 to 4.5.1,
as it was in conflict with eu.clarin.sru.fcs/fcs-ql

This partially reverts I7e21879e866cc11a2a5553c828d118df38698421 and
I4ee970b774e1fe8bb46bd56def35dfedde06232b.

Change-Id: I2ee9d2409a6fdb370640c346bca67b69f4510d48

KorAP/Koral