v3.4.0 - Adds support for changing platform.jsons using packs

What's Changed

• Allow changing platform JSONs from "data packs" by @neil-morrison44 in #115
• Bump actions/setup-node from 1 to 3 by @dependabot in #108

Full Changelog: v3.3.1...v3.4.0

Quick links:

• Mac: Pocket.Sync_3.4.0_universal.dmg
• Linux (also available via Flatpak): pocket-sync_3.4.0_amd64.AppImage pocket-sync_3.4.0_amd64.deb
• Windows: Pocket.Sync_3.4.0_x64-setup.exe