release v0.3.3

[fyzanshaik-atlan]

release v0.3.3

Releases all changes from PR #209 (already merged to main) along with the version bump and changelog update.

What's in this release

Dockerfile security improvements:

• Eliminated multi-stage builder and venv, now installing directly to system python using uv
• Removed Python venv and broken symlink workaround from Fix dependency vulns and Dockerfile python version mismatch #206
• Eliminated bundled pip/setuptools/wheel and their vendored dependencies which carried 2 HIGH vulnerabilities:
  • jaraco.context 5.3.0 (CVE-2026-23949)
  • wheel 0.45.1 (CVE-2026-24049)
• Trivy scan: 0 HIGH/CRITICAL vulnerabilities on the resulting image
• The pyatlan base image already provides pyatlan, pydantic, httpx, cryptography, authlib, h11, anyio, and other common packages at the system level
• Only MCP-specific packages (fastmcp, uvicorn, and their transitive deps) are now installed on top

Changes in this PR

• CHANGELOG.md — added 0.3.3 entry
• modelcontextprotocol/version.py — 0.3.2 → 0.3.3

All other changes were already merged via #209.