community/ion-shell: disable on ppc64le. Rust SIGSEGVs when compiling

Status Job ID Name Coverage
  Lint
passed #184256
x86_64 docker-alpine
lint

00:00:22

 
  Build
passed #184261
aarch64 ci-build docker-alpine
build-aarch64

00:11:30

passed #184262
armv7 ci-build docker-alpine
build-armv7

00:23:06

passed #184260
ppc64le ci-build docker-alpine
build-ppc64le

00:00:43

passed #184259
s390x ci-build docker-alpine
build-s390x

00:00:19

passed #184258
x86 ci-build docker-alpine
build-x86

00:11:36

passed #184257
x86_64 ci-build docker-alpine
build-x86_64

00:08:47