Fix typos in workflows

Signed-off-by: Nicolas Belouin <nicolas.belouin@suse.com>

.obs/sync_packages.py

@@ -9,7 +9,7 @@ from common import PROJECT
 
 def get_obs_packages() -> Set[str]:
     packages = subprocess.run(["osc", "ls", PROJECT], encoding='utf-8' , capture_output=True)
-    return set(packages.stdout.splitlines())
+    return { p for p in packages.stdout.splitlines() if ":" not in p }
 
 def get_local_packages() -> Set[str]:
     p = pathlib.Path('.')