Update version of GitHub action reference in README.md #2337

Job	Run time
tests (controlled, all-features, both)	54s
tests (controlled, all-features, approval)	55s
tests (controlled, facilityuse-has-slots, approval)	56s
tests (controlled, all-features, simple)	1m 7s
tests (controlled, facilityuse-has-slots, simple)	5m 50s
tests (controlled, no-auth, approval)	1m 3s
tests (controlled, no-auth, simple)	56s
tests (controlled, no-payment-reconciliation, approval)	53s
tests (controlled, no-payment-reconciliation, simple)	52s
tests (controlled, no-tax-calculation, approval)	57s
tests (controlled, no-tax-calculation, simple)	51s
tests (controlled, prepayment-always-required, simple)	54s
tests (controlled, prepayment-always-required, approval)	58s
tests (controlled, single-seller, approval)	54s
tests (random, all-features, approval)	52s
tests (controlled, single-seller, simple)	55s
tests (random, all-features, both)	56s
tests (random, all-features, simple)	55s
tests (random, facilityuse-has-slots, approval)	53s
tests (random, facilityuse-has-slots, simple)	1s
tests (random, no-auth, approval)	1s
tests (random, no-auth, simple)	1s
tests (random, no-payment-reconciliation, simple)	1s
tests (random, no-payment-reconciliation, approval)	1s
tests (random, no-tax-calculation, approval)	1s
tests (random, no-tax-calculation, simple)	1s
tests (random, prepayment-always-required, approval)	1s
tests (random, prepayment-always-required, simple)	1s
tests (random, single-seller, approval)	1s
tests (random, single-seller, simple)	1s
deploy-output	1s
	22m 43s

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