fix: correct invalid tier "free" and teams-mcp id with version (#29)

- Replace tier "free" with "fast" (valid tiers: frontier/smart/balanced/fast/local)
- Remove version suffix from teams-mcp integration id field
- Update sync-pricing.py to not generate invalid tier values

integrations/teams-mcp.toml

@@ -1,4 +1,4 @@
-id = "teams-mcp@0.3.3"
+id = "teams-mcp"
 name = "Microsoft Teams"
 description = "Access Microsoft Teams channels, chats, and messages through the MCP server"
 category = "communication"