Merge: uki_create_json.py should always sort its output

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/904

JIRA: https://issues.redhat.com/browse/RHEL-91668

```
commit 1abe0b0e2c15654556a506a6cd82d887673436ac
Author: Patrick Talbert <ptalbert@redhat.com>
Date:   Fri Apr 4 16:24:22 2025 +0200

    [redhat] scripts: sort dumped keys in uki_create_json.py

    The order of the keys in the json output may change causing unnecessary
    churn in the dist-git diffs. Fix this by setting sort_keys=True in the
    json.dump() call. Outside of locale sorting differences this should
    provide a more stable experience.

    Signed-off-by: Patrick Talbert <ptalbert@redhat.com>
```

Signed-off-by: CKI Backport Bot <cki-ci-bot+cki-gitlab-backport-bot@redhat.com>

---

<small>Created 2025-05-15 11:45 UTC by backporter - [KWF FAQ](https://red.ht/kernel_workflow_doc) - [Slack #team-kernel-workflow](https://redhat-internal.slack.com/archives/C04LRUPMJQ5) - [Source](https://gitlab.com/cki-project/kernel-workflow/-/blob/main/webhook/utils/backporter.py) - [Documentation](https://gitlab.com/cki-project/kernel-workflow/-/blob/main/docs/README.backporter.md) - [Report an issue](https://issues.redhat.com/secure/CreateIssueDetails!init.jspa?pid=12334433&issuetype=1&priority=4&summary=backporter+webhook+issue&components=kernel-workflow+/+backporter)</small>

Approved-by: Jan Stancek <jstancek@redhat.com>
Approved-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Approved-by: Patrick Talbert <ptalbert@redhat.com>
Approved-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Julio Faracco <jfaracco@redhat.com>

Author: jcfaracco

redhat/scripts/uki_addons/uki_create_json.py

@@ -86,7 +86,7 @@ def create_json(addons):
 
 def write_json(obj, dest_file):
     with open(dest_file, 'w') as f:
-        json.dump(obj , f, indent=4)
+        json.dump(obj , f, indent=4, sort_keys=True)
     print(f'Processed addons files are in {dest_file}')
 
 if __name__ == "__main__":