chore: bump to 1.3.6, in-range deps upgrade

markdown-it-py 4.0.0 -> 4.1.0
pydantic       2.13.3 -> 2.13.4
pydantic-core  2.46.3 -> 2.46.4
ujson          5.12.0 -> 5.12.1

`uv lock --upgrade` only — all top-level deps are already at the
latest published version (httpx 0.28.1, x402 2.9.0, pympp 0.7.0,
cdp-sdk 1.44.0).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vvillait88

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "agentscore-commerce"
-version = "1.3.5"
+version = "1.3.6"
 description = "Agent 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 agent commerce."
 readme = "README.md"
 license = "MIT"