get datums using pallas observer #27

Job	Run time
build-ubuntu-X64	3m 59s
build (macos-12)	2m 54s
build-test-wasm	52s
build (windows-latest)	4m 28s
check	1m 39s
test (ubuntu-22.04)	5m 12s
test (macos-12)	2m 17s
test (windows-latest)	4m 53s
publish-wasm-test	0s
run-test-lab (thales, 1)	1m 37s
run-test-lab (thales, 2)	1m 36s
run-test-lab (thales, 3)	1m 38s
run-test-lab (thales, 3, --use-p2p-network)	1m 36s
publish-tests-results	9s
publish-crate-test	1s
docker-mithril	1s
unstable-release	1s
deploy-testing	1s
	32m 54s

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