Bump docker/setup-buildx-action from 3.3.0 to 3.6.1 #253

Job	Run time
bullseye armv7 / build	17m 14s
bookworm armv7 / build	16m 10s
bookworm armv7 / test (pi, run_installation_classic.sh)	11m 24s
bookworm armv7 / test (pi, run_installation_rfid.sh)	12m 10s
bookworm armv7 / test (pi, run_installation_spotify.sh)	15m 9s
bookworm armv7 / test (pi, run_installation_staticip_dhcpcd.sh)	11m 54s
bookworm armv7 / test (pi, run_installation_autohotspot_dhcpcd.sh)	12m 14s
bookworm armv7 / test (pi, run_installation_autohotspot_NetworkManager.sh)	11m 59s
bookworm armv7 / test (hans, run_installation_classic.sh)	41s
bullseye armv7 / test (pi, run_installation_classic.sh)	4m 31s
bullseye armv7 / test (pi, run_installation_rfid.sh)	4m 44s
bullseye armv7 / test (pi, run_installation_spotify.sh)	8m 46s
bullseye armv7 / test (pi, run_installation_staticip_dhcpcd.sh)	5m 6s
bullseye armv7 / test (pi, run_installation_autohotspot_dhcpcd.sh)	5m 23s
bullseye armv7 / test (pi, run_installation_autohotspot_NetworkManager.sh)	5m 4s
bullseye armv7 / test (hans, run_installation_classic.sh)	44s
bookworm armv7 / cleanup	2s
bullseye armv7 / cleanup	9s
	2h 23m 24s

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