[build] Go target (and likely Cpp target) not robust because "antlr4" tool doesn't work reliably.

[kaby76]

As I pointed out here, the "antlr4" tool is not reliable if one tries to just use the "latest" version of Antlr, i.e., don't use the -v option to say what version you want. It looks like the query times out and then the code crashes. This is catastrophic for testing. And, programming around this by detecting this particular crash, as opposed to a legitimate problem with the grammar you are trying to run the tool on, would not be very nice looking scripting code. Already these Bash scripts look like a mess.

We'll need to set the version explicitly for the Go (and likely Cpp) target.