fix: make ota workflow YAML valid

.gitea/workflows/ota-build.yml

@@ -70,10 +70,10 @@ jobs:
           package_version="${GITHUB_SHA}"
           curl --fail --silent --show-error --user "${GITHUB_ACTOR}:${GITEA_TOKEN}" "${GITHUB_SERVER_URL}/api/v1/packages/${GITHUB_REPOSITORY_OWNER}/generic/${package_name}/${package_version}/files" > /tmp/package-files.json
           python3 - <<'PY'
-import json
-from pathlib import Path
-files=json.loads(Path('/tmp/package-files.json').read_text())
-assert files, 'no package files returned'
-for item in files:
+          import json
+          from pathlib import Path
+          files = json.loads(Path('/tmp/package-files.json').read_text())
+          assert files, 'no package files returned'
+          for item in files:
               print(item.get('name') or item.get('file_name') or item)
-PY
+          PY