Merge pull request #20257 from bluca/seqno

Use new diskseq block device property

diff --cc src/core/namespace.c
Simple merge

diff --cc src/dissect/dissect.c
Simple merge

diff --cc src/gpt-auto-generator/gpt-auto-generator.c
Simple merge

diff --cc src/libsystemd/sd-device/sd-device.c
Simple merge

diff --cc src/nspawn/nspawn.c
Simple merge

diff --cc src/portable/portable.c
Simple merge

diff --cc src/shared/discover-image.c
Simple merge

diff --cc src/shared/dissect-image.c
Simple merge

diff --cc src/sysext/sysext.c
Simple merge