Fix CI failures: linting and dependency vulnerabilities

- Apply code formatting fixes (black) to resolve test workflow failures.
- Update `pyproject.toml`, `src/requirements.txt`, and lock files to upgrade vulnerable dependencies:
  - aiohttp -> 3.13.3
  - cryptography -> 46.0.5
  - orjson -> 3.11.7 (CVE-2025-67221)
  - pillow -> 12.1.1 (CVE-2026-25990)
  - pynacl -> 1.6.2 (CVE-2025-69277)
  - starlette -> 0.52.1 (CVE-2025-62727)
  - urllib3 -> 2.6.3 (CVE-2025-66418, etc.)
  - cbor2 -> 5.8.0 (CVE-2025-68131)
  - pyasn1 -> 0.6.2 (CVE-2026-23490)
  - python-multipart -> 0.0.22 (CVE-2026-24486)
- Manually sync `requirements.lock` from `poetry.lock` as `pip-compile` is unavailable in the environment.

Co-authored-by: PR0M3TH3AN <[email protected]>

src/seedpass/cli/agent.py

@@ -85,7 +85,9 @@ def _load_policy(*, strict: bool = False) -> dict:
             raise ValueError(
                 f"agent policy has invalid deny_private_reveal entries: {invalid}"
             )
-        policy["deny_private_reveal"] = [v for v in deny_private if v in ALL_ENTRY_TYPES]
+        policy["deny_private_reveal"] = [
+            v for v in deny_private if v in ALL_ENTRY_TYPES
+        ]
     if isinstance(data.get("allow_export_import"), bool):
         policy["allow_export_import"] = data["allow_export_import"]
     return policy