Bump @aws-sdk/client-appsync from 3.309.0 to 3.474.0 #1233

Job	Run time
readonly tests	4m 14s
setup-basic-integration-test	1m 17s
setup-common-test	1m 6s
setup-module-test	1m 8s
style	1m 22s
iasql_upgrade test	5m 11s
lint	1m 26s
common.test.AWS_DIFF	1m 15s
common.test.GET_SQL_SINCE	4m 28s
build-and-push	3m 30s
common.test.CANONICAL_IAM_POLICY	1m 13s
common.test.TOTAL_FAILURE	4m 4s
common.test.CREATE_REVIEW	3m 59s
common.test.METADATA	4m 38s
common.test.BASIC_DB	3m 6s
common.test.TABLE_ACCESS	3m 13s
common.test.ALL_MODULES_HAVE_TABLES	4m 0s
common.test.SIMPLE_INTEGRATION	5m 24s
common.test.DEP_SORTING	1m 20s
basic-integration.test.GET_SQL_FOR_TRANSACTION	1m 9s
basic-integration.test.REVERT	1m 0s
basic-integration.test.COMMIT	55s
basic-integration.test.AUTOMATIC_MODE	1m 8s
basic-integration.test.INSTALL	1m 27s
basic-integration.test.ROLLBACK	58s
basic-integration.test.UNINSTALL	1m 0s
module test ${{ matrix.module }}	0s
get-pr-debug-info	0s
log-pr-debug-info	0s
	1h 3m 31s

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