perf(host): release running_tasks lock asap #751

Job	Run time
Test raiko-lib	1m 17s
build-test-risc0 / Build and test risc0 / Build and test	26m 55s
build-test-native / Build and test native / Build and test	8m 2s
build-test-native / Run integration tests on native / Build and run integration	4m 1s
build-test-risc0 / Run integration tests on risc0 / Build and run integration	10m 33s
build-test-sgx-all / Build and test sgx / Build and test	7m 39s
build-test-sgx-all / Build and test sgx with Docker / Build and test sgx with Docker	4m 39s
build-test-sgx-all / Build and test sgx in hardware / Build and test sgx in hardware	18m 58s
build-test-sgx-all / Run integration tests on sgx / Build and run integration	4m 55s
build-test-sp1 / Build and test sp1 / Build and test	26m 12s
build-test-sp1 / Run integration tests on sp1 / Build and run integration	7m 56s
	2h 1m 7s

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