Flaky CI related investigation and fixes #4516

Job	Run time
cli-tests	15m 14s
build-and-test	14m 51s
integration-tests	20m 21s
docker-targets-build (${{ matrix.platform.platform }})	0s
Publish binaries of ${{ matrix.project }}	0s
sharding-tests	10m 49s
wasm-rpc-stub	1m 1s
worker-tests-group1	6m 28s
docker-publish	0s
worker-tests-group2	3m 52s
worker-tests-group3	4m 55s
worker-tests-group4	5m 52s
worker-tests-group5	8m 58s
worker-tests-group6	16m 14s
worker-tests-group7	6m 38s
worker-tests-group8	13m 52s
publish	0s
publish-slack-notification	0s
	2h 9m 5s

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