Update to 1.20.2

[TheDeathlyCow]

Closes #11

Thermoo is now updated to 1.20.2. This is the first step to updating to 1.20.4. This update includes a few breaking changes to the temperature effect and item attribute modifiers APIs. The JSON APIs will mostly work as before, with only a few changes.

This will likely be the only update for 1.20.2.

Changelog:

• Updated Thermoo to MC 1.20.2
• Refactored temperature effects to use codecs instead of serializers.
• Some nonsensical values in temperature effect JSONs are no longer allowed
• Equipment slot and attribute operations are now supplied as lower_case strings instead of UPPER_CASE.
• Removed built in integrations for Fabric Seasons, Colorful Hearts, and Overflowing bars. These have been moved to Thermoo Patches.
• Removed the deprecated temperature effect thermoo:freeze_damage_legacy and associated Legacy Damage temperature effect type.
• Removed the thermoo.temperature field from minecraft:entity_properties loot conditions
• Added thermoo:temperature and thermoo:soaked loot conditions