chore(build): force golang toolchain from daemon/go.mod (#1115)

Set `GOTOOLCHAIN` to `auto` to ensure go toolchain from `daemon/go.mod`
will always be used.

Author: lavarou

Makefile

@@ -10,6 +10,8 @@ GCOV  ?= gcov
 SHELL = /bin/bash
 GCOVR ?= gcovr
 GIT   ?= git
+# make sure go toolchain defined in daemon/go.mod is always used
+GOTOOLCHAIN=auto
 
 include make/config.mk
 include make/vendor.mk