chore: Pin github actions. (#500) #2595

Job	Run time
contract-tests-curl	3m 38s
contract-tests	4m 1s
build-test-client-windows	15m 50s
build-test-client-windows-curl	16m 49s
build-test-client-mac	12m 20s
build-test-curl	6m 0s
build-test-client-mac-curl	6m 31s
build-test	6m 15s
	1h 11m 24s

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