distribution Raspberry Pi OS - changes :
- last release upgrade from ‘2026-04-14’ to ‘2026-04-21’
- last url from ‘https://downloads.raspberrypi.com/raspios_arm64/images/raspios_arm64-2026-04-14/2026-04-13-raspios-trixie-arm64.img.xz’ to ‘https://downloads.raspberrypi.com/raspios_arm64/images/raspios_arm64-2026-04-21/2026-04-21-raspios-trixie-arm64.img.xz’