Release v0.4.12

What's Changed

• Bump moment from 2.29.3 to 2.29.4 by @dependabot in #385
• Bump terser from 5.14.1 to 5.14.2 by @dependabot in #386
• fix bug with mempool explorer url by @bordalix in #387
• add walletState V4 migration by @louisinger in #390

Full Changelog: v0.4.11...v0.4.12