fix: update testdata for special chars #609

Job	Run time
bullseye armv7 / build	1m 48s
bookworm armv7 / build	1m 56s
bullseye armv7 / test (pi, run_installation_classic.sh)	4m 39s
bullseye armv7 / test (pi, run_installation_rfid.sh)	4m 43s
bullseye armv7 / test (pi, run_installation_spotify.sh)	8m 28s
bullseye armv7 / test (pi, run_installation_staticip_dhcpcd.sh)	4m 38s
bullseye armv7 / test (pi, run_installation_autohotspot_dhcpcd.sh)	5m 25s
bullseye armv7 / test (pi, run_installation_autohotspot_NetworkManager.sh)	6m 3s
bullseye armv7 / test (hans, run_installation_classic.sh)	43s
bookworm armv7 / test (pi, run_installation_classic.sh)	11m 44s
bookworm armv7 / test (pi, run_installation_rfid.sh)	12m 35s
bookworm armv7 / test (pi, run_installation_spotify.sh)	15m 35s
bookworm armv7 / test (pi, run_installation_staticip_dhcpcd.sh)	11m 51s
bookworm armv7 / test (pi, run_installation_autohotspot_dhcpcd.sh)	12m 20s
bookworm armv7 / test (pi, run_installation_autohotspot_NetworkManager.sh)	12m 44s
bookworm armv7 / test (hans, run_installation_classic.sh)	42s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	4s
	1h 56m 0s

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