App manifest: more cleanups #4157

Job	Run time
build-and-test	8m 25s
cli-tests	7m 58s
integration-tests	8m 25s
docker-targets-build (${{ matrix.platform.platform }})	0s
Publish binaries of ${{ matrix.project }}	0s
sharding-tests	7m 48s
wasm-rpc-stub	1m 6s
worker-tests-group1	6m 0s
docker-publish	0s
worker-tests-group2	1m 33s
worker-tests-group3	35s
worker-tests-group4	1m 33s
worker-tests-group5	10s
worker-tests-group6	8s
worker-tests-group7	7s
worker-tests-group8	7s
publish	1s
publish-slack-notification	1s
	43m 57s

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