Prototool v1.10.0 uses go1.12.4

[rantianhua]

Prototool v1.10.0 release notes say that this version uses go 1.14.2. I install Prototool on my OS X using the following command:

curl -sSL https://github.com/uber/prototool/releases/download/v1.10.0/prototool-Darwin-x86_64 -o /usr/local/bin/prototool
chmod +x /usr/local/bin/prototool

Then check the installation:

➜  ~ prototool version
Version:                 1.10.0
Default protoc version:  3.11.0
Go version:              go1.12.4
OS/Arch:                 darwin/amd64

The go version is 1.12.4 instead of 1.14.2. My installed go version is 1.14.2.

➜  ~ go version
go version go1.14.2 darwin/amd64

I want to know what's the problem.