Pyscript 1.6.2 release

The 1.6.2 release supports HASS 2025.3.3.

This release has several updates and bug fixes.

• added state.exist to check whether entity_id exists (PR #634 from @ALERTua)
• fix ConfigType import for HA2024.11 (PR #651 from @rccoleman)
• fixed NameError with inner function variable shadowing (see #683 from @rtimush)
• removed 2nd await to fix #643 and #673 (PR #688 from @dmamelin)
• attempts to fix config flow warnings (PR #702 from @LucidityCrash)
• python version bumped to 3.13 and various requirement versions updated
• doc updates for @mqtt_trigger wildcards and example (PRs #677 and #680 from @larsimmisch)
• doc updates (PR #626 from @ALERTua)
• doc updates for @mqtt_trigger and lambda (PR #707 from @dfries)
• doc updates (PR #708 from @BastiaanBergman)
• doc updates around race conditions, limitations on defining async functions, blocking code, and avoiding lazy loading packages like pytz

Thanks to everyone who contributed PRs and reported issues.

Enjoy!