bump elemental-toolkit to v2 #2803

Job	Run time
detect	1s
build-toolkit	2m 27s
build-matrix (green) / build-os	2m 43s
build-matrix (green) / detect	9s
build-matrix (green) / build-disk	3m 7s
build-matrix (green) / build-iso	1m 40s
build-matrix (green) / test-installer	14m 51s
build-matrix (green) / tests-matrix (test-upgrade)	13m 5s
build-matrix (green) / tests-matrix (test-downgrade)	38m 1s
build-matrix (green) / tests-matrix (test-recovery)	41m 56s
build-matrix (green) / tests-matrix (test-fallback)	22m 0s
build-matrix (green) / tests-matrix (test-fsck)	17m 10s
build-matrix (green) / tests-matrix (test-grubfallback)	13m 36s
	2h 50m 46s

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