Lower volume + Unity security patch

Here's a small update!

• Since a couple people commented about the game's audio being too loud (the parade in particular), I've reduced the volume of all the sound effects!
• I've also patched the Unity CVE-2025-59489 vulnerability that's in all Unity games targeting Win/Android/Mac/Linux made in Unity versions released between Jul 11, 2017 and Oct 2, 2025. Here's a PCGamer article if you're interested in more info about that, and Unity's directions for patching your games if you're a Unity dev.