Bump version to 0.2.0 so the robot picks up the new build

The wake fix and the API-key web UI were pushed without a version bump,
so the Space still advertised 0.1.0; the daemon's update check sees the
same version and won't pull the new build on (re)install. Bump to 0.2.0.

Packaging verified locally: `pip wheel` builds talk-…-py3-none-any.whl
cleanly and `pip check` reports no dependency conflicts with reachy-mini,
so the package itself is install-ready. Also refreshed the now-stale
description to mention conversation mode.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

pyproject.toml

@@ -5,8 +5,8 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "talk"
-version = "0.1.0"
-description = "Wakes up the robot and announces the current date and time in German"
+version = "0.2.0"
+description = "Wakes the robot on speech, announces the time, then chats with Claude in German"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [