ci: update buildx to latest version #322

Job	Run time
validate	14s
test (alpine:3.13, alpine, false)	1m 44s
test (alpine:3.14, alpine, false)	4m 49s
test (alpine:3.15, alpine, false)	4m 0s
test (alpine:3.16, alpine, false)	4m 28s
test (alpine:3.17, alpine, false)	5m 33s
test (alpine:3.18, alpine, false)	4m 51s
test (alpine:edge, alpine, true)	4m 46s
test (debian:buster-backports, debian, true)	5m 45s
test (debian:bullseye-backports, debian, false)	14m 37s
test (debian:bookworm, debian, false)	16m 7s
test (debian:sid, debian, true)	19m 21s
test (ubuntu:20.04, debian, false)	19m 41s
test (ubuntu:22.04, debian, false)	14m 21s
test (redhat/ubi8, rhel, false)	1m 32s
test (fedora:37, rhel, false)	2m 14s
test (fedora:38, rhel, false)	1m 33s
test (centos:7, rhel, false)	2m 22s
test (rockylinux/rockylinux:8, rhel, false)	1m 54s
test (rockylinux/rockylinux:9, rhel, false)	1m 38s
test (oraclelinux:8, rhel, false)	1m 13s
test (oraclelinux:9, rhel, false)	48s
build	0s
	2h 13m 31s

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