flatpak: Correct https URLs


(cherry picked from commit 5d7e9e83)
3 jobs for cherry-pick-5d7e9e83 in 22 minutes and 5 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Check
passed #7078
pep8

00:05:26

passed #7077
pyflakes

00:05:28

 
  Build
passed #7079
build

00:11:10