example: Resize demo window

Fixes: Librem5/libhandy#235
11 jobs for resize-example-window in 23 minutes and 29 seconds (queued for 1 minute and 17 seconds)
Status Job ID Name Coverage
  Build
passed #259772
librem5
api-visibility

00:02:40

passed #259774
librem5
build-debian-clang

00:03:59

passed #259773
librem5
build-debian-gcc

00:03:00

passed #259775
librem5
build-fedora-gcc

00:03:07

 
  Test+Docs
passed #259776
librem5
build-gtkdoc

00:02:13

passed #259777
librem5
unit-test

00:02:11

43.4%
 
  Package
passed #259778
librem5
package-debian-buster

00:02:02

passed #259779
librem5:arm64
package-debian-buster:arm64

00:06:11

passed #259780
flatpak
package-flatpak

00:06:31

 
  Test Package
passed #259781
librem5
autopkgtest-debian-buster-package

00:01:58

passed #259782
librem5
lintian-debian-buster-package

00:00:46