CI: Fix Docker image uris

Images where migrated a couple months ago to the
GNOME gitlab instance.
1 job for master in 7 minutes and 10 seconds (queued for 5 seconds)
Status Job ID Name Coverage
failed #43498


Name Stage Failure
fedora:test Test
make[1]: *** [Makefile:906: check-recursive] Error 1
make: *** [Makefile:1358: check] Error 2
make[1]: Leaving directory '/builds/cairo/cairo'
Uploading artifacts...
test/*.log: found 2 matching files
test/pdiff/*.log: found 1 matching files

test/output: found 2101 matching files

Uploading artifacts to coordinator... ok
id=43498 responseStatus=201 Created token=KZDYdgPs
ERROR: Job failed: exit code 1