[CI:BUILD] Packit: Restrict cockpit tests to recent Fedoras

The cockpit team only ever supports two parallel Fedora releases, and
will soon discontinue updating Fedora 37. So, instead of risking testing
against an obsolete Fedora, test against the most recent stable and
all development series. These are often fewer than we support, but
that's totally sufficient for this purpose.

[NO NEW TESTS NEEDED] - This is test configuration.

Signed-off-by: Martin Pitt <[email protected]>

.packit.yaml

@@ -37,7 +37,8 @@ jobs:
     identifier: cockpit-revdeps
     trigger: pull_request
     targets:
-      - fedora-all
+      - fedora-latest-stable
+      - fedora-development
     tf_extra_params:
       environments:
         - artifacts: