BE-730 | golangci-lint to use toolchain of the current Go version specified in go.mod (#650)

Older versions of golangci-lint has some memory leaks when running with newer Go versions leading consuming all available RAM and crashing.

This PR forces to use toolchain of the current Go version specified in go.mod.

Author: deividaspetraitis

Makefile

@@ -9,6 +9,7 @@ export OSTYPE := $(shell uname -s)
 VERSION := $(shell echo $(shell git describe --tags) | sed 's/^v//')
 COMMIT := $(shell git log -1 --format='%H')
 GO_VERSION := $(shell cat go.mod | grep -E 'go [0-9].[0-9]+' | cut -d ' ' -f 2)
+GOTOOLCHAIN := go$(GO_VERSION)
 PACKAGES_UNIT=$(shell go list ./...)
 DOCKER := $(shell which docker)
 BUILDDIR ?= $(CURDIR)/build
@@ -58,7 +59,7 @@ all-start: osmosis-start run
 
 lint:
 	@echo "--> Running linter"
-	golangci-lint run --timeout=10m
+	GOTOOLCHAIN=$(GOTOOLCHAIN) golangci-lint run --timeout=10m
 
 test-unit:
 	@VERSION=$(VERSION) go test -mod=readonly $(PACKAGES_UNIT)