community/stellarium: upgrade to 0.20.2

Fixes build with qt5.15
7 jobs for !11125 with stellarium in 185 minutes and 38 seconds
detached
Status Job ID Name Coverage
  Lint
passed #180580
x86_64 docker-alpine
lint

00:00:23

 
  Build
passed #180585
aarch64 ci-build docker-alpine
build-aarch64

00:08:40

passed #180586
armv7 ci-build docker-alpine
build-armv7

00:11:13

passed #180584
ppc64le ci-build docker-alpine
build-ppc64le

03:05:13

passed #180583
s390x ci-build docker-alpine
build-s390x

00:06:58

passed #180582
x86 ci-build docker-alpine
build-x86

00:06:29

passed #180581
x86_64 ci-build docker-alpine
build-x86_64

00:03:34