ci: use the new free-disk-space action owner (#169)

The action moved to the lumbroso-commons organization. The old name only
redirects. Use the new name and pin to the v2.0.0 commit, as the main
repository does.

Signed-off-by: Marco Nenciarini <marco.nenciarini@enterprisedb.com>

Author: mnencia

.github/workflows/reusable-e2e.yml

@@ -76,7 +76,7 @@ jobs:
       TEST_CLOUD_VENDOR: "kind"
     steps:
       - name: Cleanup Disk
-        uses: jlumbroso/free-disk-space@main
+        uses: lumbroso-commons/free-disk-space@ceedf095f4ec1a097402bc6bd80831f2e1a6fde6 # v2.0.0
         with:
           android: true
           dotnet: true