Makefile: update buildx to v0.9.0
@ -1,6 +1,6 @@
.PHONY: all binary dynbinary build cross help install manpages run shell test test-docker-py test-integration test-unit validate win
BUILDX_VERSION ?= v0.8.2
BUILDX_VERSION ?= v0.9.0
ifdef USE_BUILDX
BUILDX ?= $(shell command -v buildx)