Remove uses of deprecated dictionary concatenation (#1663)
Remove uses of deprecated dictionary concatenation (#1663)

This removes the need for --incompatible_disallow_dict_plus
Xjs/rules_go,bazelbuild/rules_go,Xjs/rules_go,bazelbuild/rules_go,bazelbuild/rules_go,Xjs/rules_go,Xjs/rules_go,bazelbuild/rules_go,Xjs/rules_go,bazelbuild/rules_go