testing/py3-language-server: disable tests on armhf due to missing testdeps

Status Job ID Name Coverage
  Lint
passed #50793
x86_64 docker-alpine
lint

00:00:58

 
  Build
passed #50798
aarch64 ci-build docker-alpine
build-aarch64

00:01:00

passed #50799
armv7 ci-build docker-alpine
build-armv7

00:00:55

passed #50797
ppc64le ci-build docker-alpine
build-ppc64le

00:01:18

passed #50796
s390x ci-build docker-alpine
build-s390x

00:01:13

passed #50795
x86 ci-build docker-alpine
build-x86

00:00:47

passed #50794
x86_64 ci-build docker-alpine
build-x86_64

00:00:39