add lower limit to network source samplerate #1393

Job	Run time
build_debian_buster	3m 27s
build_debian_bullseye	3m 25s
build_android	12m 9s
build_debian_bookworm	4m 1s
build_debian_sid	3m 44s
build_macos_intel	5m 48s
build_macos_arm	2m 21s
build_raspios_bullseye_armhf	11m 18s
build_ubuntu_focal	3m 54s
build_ubuntu_jammy	3m 29s
build_ubuntu_mantic	3m 30s
build_ubuntu_noble	4m 9s
build_windows	14m 16s
check_formatting	12s
check_spelling	14s
create_full_archive	6s
update_nightly_release	11s
	1h 16m 14s

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