Release 3.2.2: require agentscore-py 2.8.1 for its certifi floor (#166)

## Summary

Release 3.2.2. This raises the `agentscore-py` floor from 2.8.0 to
2.8.1.

agentscore-py 2.8.1 requires `certifi>=2026.10.19`. Older certifi
releases trust emSign roots whose intermediate CA keys were compromised
(GHSA-6q48-6c7w-9gw2). With the new floor, any install of
agentscore-commerce 3.2.2 resolves a certifi that does not trust those
roots. The floor lives in agentscore-py, so this package does not repeat
it.

In the lockfile, agentscore-py moves to 2.8.1 and certifi moves from
2026.10.18 to 2026.10.19.

Worked with Varun.

## Type of change

- [x] Bug fix (no breaking change)
- [ ] New feature (no breaking change)
- [ ] Breaking change (existing callers must update)
- [ ] Docs, tests, or internal maintenance only

## Public API

Unchanged. The one changed requirement is `agentscore-py>=2.8.1`.

## Test plan

- `uv sync --frozen --all-extras --all-groups`, then:
  - `uv run pytest`: 1674 passed, 4 skipped.
  - `uv run ruff check .` and `uv run ruff format --check .`: clean.
  - `uv run ty check`: clean.
  - `uv run vulture . --min-confidence 80 --exclude .venv`: clean.
- `osv-scanner` on `uv.lock`: no issues found.

## Checklist

- [ ] Tests cover the new behavior, and the suite passes locally (a
dependency floor adds no behavior to test; the existing suite passes)
- [x] Lint, format, and type checks pass
- [ ] Docs and README examples updated if the public surface changed
(the public surface did not change)
- [x] No secrets, credentials, or personal data in the diff or the tests

Author: vvillait88

pyproject.toml

@@ -4,15 +4,15 @@ build-backend = "hatchling.build"
 
 [project]
 name = "agentscore-commerce"
-version = "3.2.1"
+version = "3.2.2"
 description = "Agentic commerce SDK for Python: identity middleware (FastAPI, Flask, Django, AIOHTTP, Sanic, ASGI) + payment helpers + 402 builders + discovery + Stripe multichain. The full merchant-side toolkit for AgentScore-powered agentic commerce."
 readme = "README.md"
 license = "MIT"
 requires-python = ">=3.11"
 keywords = ["agentscore", "agentic-commerce", "agentic-payments", "402", "x402", "mpp", "machine-payments-protocol", "fastapi", "starlette", "flask", "django", "aiohttp", "sanic", "middleware", "kyc", "identity", "stripe", "tempo", "solana", "base", "ai-agent"]
 dependencies = [
     "httpx>=0.25.0,<1.0.0",
-    "agentscore-py>=2.8.0",
+    "agentscore-py>=2.8.1",
 ]
 classifiers = [
     "Development Status :: 5 - Production/Stable",