testing/xmrig: modernize

Architectures officially supported by upstream: aarch64, x86 and x86_64
7 jobs for !14573 with xmrig in 2 minutes and 21 seconds
detached
Status Job ID Name Coverage
  Lint
passed #246516
docker-alpine x86_64
lint

00:00:25

 
  Build
passed #246521
docker-alpine ci-build aarch64
build-aarch64

00:01:03

passed #246522
docker-alpine ci-build armv7
build-armv7

00:00:40

passed #246520
docker-alpine ci-build ppc64le
build-ppc64le

00:00:42

passed #246519
docker-alpine ci-build s390x
build-s390x

00:00:31

passed #246518
docker-alpine ci-build x86
build-x86

00:01:08

passed #246517
docker-alpine ci-build x86_64
build-x86_64

00:00:57