Flatpak rutime pipeline fail to publish

Background

The pipeline for apertis-flatpak-runtime fail at publish stage with

INFO:otpush.push:Connected local HTTP port 42217 to remote port 45801
INFO:otpush.receive:Remote commits:
INFO:otpush.receive: app/org.apertis.headless.curl/aarch64/v2024 0cbf57babe469eebbc7de09834163d22645f1fdaf57945ec9820aefaca043d17
INFO:otpush.receive: runtime/org.apertis.headless.curl.Sources/aarch64/v2024 dcdd88012041e7cd29e8dbfccb045056c891bf91a45655a10bfbde641c60b08b
INFO:otpush.receive:Current commits:
INFO:otpush.receive: app/org.apertis.headless.curl/aarch64/v2024 70c8d29dff1666a76669f8f96098dc730e7fd267001266693403bc5441166d85
INFO:otpush.receive: runtime/org.apertis.headless.curl.Sources/aarch64/v2024 1a009fb19033ffbbd78c5989f9bd2de9ed71207da72070afcb0e887a89178084
10 metadata, 2 content objects fetched; 6 KiB transferred in 0 seconds
INFO:otpush.receive:Updating repo metadata with flatpak build-update-repo /srv/images/public/flatpak/repo --sign-type=ed25519 --sign=<key #1 from /srv/images/conf/apertis-flatpak-sign-key>
error: Unknown option --sign-type=ed25519
Traceback (most recent call last):
  File "/usr/bin/ostree-receive-1", line 33, in <module>
    sys.exit(load_entry_point('ostree-push==1.0.1', 'console_scripts', 'ostree-receive-1')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/otpush/receive.py", line 729, in main
    repo.receive(args.refs)
  File "/usr/lib/python3/dist-packages/otpush/receive.py", line 678, in receive
    self.update_repo_metadata()
  File "/usr/lib/python3/dist-packages/otpush/receive.py", line 542, in update_repo_metadata
    subprocess.check_call(cmd_prefix + sign_opts)
  File "/usr/lib/python3.11/subprocess.py", line 413, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['flatpak', 'build-update-repo', '/srv/images/public/flatpak/repo', '--sign-type=ed25519', '--sign=[MASKED]']' returned non-zero exit status 1.
Traceback (most recent call last):
  File "/usr/bin/ostree-push", line 33, in <module>
    sys.exit(load_entry_point('ostree-push==1.0.1', 'console_scripts', 'ostree-push')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/otpush/push.py", line 549, in main
    push_refs(repo, args.dest, refs=args.refs,
  File "/usr/lib/python3/dist-packages/otpush/push.py", line 376, in push_refs
    ssh.run(cmd)
  File "/usr/lib/python3/dist-packages/otpush/push.py", line 299, in run
    return subprocess.run(run_cmd, check=check, **subprocess_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['ssh', '-S', '/scratch/ostree-push-lm_nl5_i/socket', '-o', 'SetEnv=OSTREE_RECEIVE_CONF=/srv/images/conf/apertis-flatpak.conf', 'images.apertis.org', '/usr/bin/ostree-receive-1', '/srv/images/public/flatpak/repo', 'http://127.0.0.1:45801', 'runtime/org.apertis.headless.curl.Sources/aarch64/v2024', 'app/org.apertis.headless.curl/aarch64/v2024']' returned non-zero exit status 1.
section_end:1716261464:step_script