Update @bazel_toolchains in WORKSPACE (#1701)
Update @bazel_toolchains in WORKSPACE (#1701)

Fixes #1698
bazelbuild/rules_go,bazelbuild/rules_go,Xjs/rules_go,Xjs/rules_go,bazelbuild/rules_go,Xjs/rules_go,Xjs/rules_go,bazelbuild/rules_go,bazelbuild/rules_go,Xjs/rules_go